Atoms Diagrams Showing Electron Configurations of Elements

Electron Shell Diagrams of Atoms

A neutral atom has the same number of protons, neutrons, and electrons.
A neutral atom has the same number of protons, neutrons, and electrons. KTSDESIGN / Getty Images

It's easier to understand electron configuration and valence if you can actually see the electrons surrounding atoms. Here are atom diagrams for the elements, ordered by increasing atomic number.

For each atom diagram, the element symbol is listed in the nucleus. The electron shells are shown, moving outward from the nucleus. The final ring or shell of electrons contains the typical number of valence electrons for an atom of that element.

Elements are show from atomic number 1 (hydrogen) up to 94 (plutonium). However, it's easy to determine the configuration of electrons for heavier elements by making a chart.

Hydrogen Atom Electron Shell Diagram

This diagram of the hydrogen atom depicts the electron shell of hydrogen.
This diagram of the hydrogen atom depicts the electron shell of hydrogen. Greg Robson, Creative Commons License

Reading the diagram: The element atomic number and name are listed in the upper left. The upper right side shows the number of electrons in a neutral atom. Remember, a neutral atom contains the same number of protons and electrons.

The isotope is defined by the number of neutrons in an atom, which might be equal to the number of protons or not.

An ion of an atom is one in which the number of protons and electrons is not the same. If there are more protons than electrons, an atomic ion has a positive charge and is called a cation. If there are more electrons than protons, the ion has a negative charge and is called an anion.

Helium Atom Electron Shell Diagram

This diagram of a helium atom shows the electron shell of helium.
This diagram of a helium atom shows the electron shell of helium. Greg Robson, Creative Commons License

Lithium Atom Electron Shell Diagram

This diagram of a lithium atom indicates its electron shell.
This diagram of a lithium atom indicates its electron shell. Greg Robson, Creative Commons License

Beryllium Atom Electron Shell Diagram

This diagram shows the electron configuration of a beryllium atom.
This diagram shows the electron configuration of a beryllium atom. Greg Robson, Creative Commons License

Boron Atom Electron Shell Diagram

This diagram of a boron atom indicates the electron shell of boron.
This diagram of a boron atom indicates the electron shell of boron. Greg Robson, Creative Commons License

Carbon Atom Electron Shell Diagram

This diagram shows the electron shell of a carbon atom.
This diagram shows the electron shell of a carbon atom. Greg Robson, Creative Commons License

Nitrogen Atom Electron Shell Diagram

This diagram shows the electron shell of a nitrogen atom.
This diagram shows the electron shell of a nitrogen atom. Greg Robson, Creative Commons License

Oxygen Atom Electron Shell Diagram

This diagram of an oxygen atom shows the electron shell.
This diagram of an oxygen atom shows the electron shell. Greg Robson, Creative Common License

Fluorine Atom Electron Shell Diagram

This diagram shows the electron shell of a fluorine atom.
This diagram shows the electron shell of a fluorine atom. Greg Robson, Creative Commons License

Neon Atom Electron Shell Diagram

This diagram shows the electron shell of the neon atom.
This diagram shows the electron shell of the neon atom. Greg Robson, Creative Commons License

Sodium Atom Electron Shell Diagram

This diagram shows the electron shell configuration for the sodium atom.
This diagram shows the electron shell configuration for the sodium atom. Greg Robson, Creative Commons License

Magnesium Atom Electron Shell Diagram

This diagram shows the electron shell configuration of a magnesium atom.
This diagram shows the electron shell configuration of a magnesium atom. Greg Robson, Creative Commons License

Aluminium Atom Electron Shell Diagram

This diagram shows the electron shell configuration for an atom of the element aluminium.
This diagram shows the electron shell configuration for an atom of the element aluminium. Greg Robson, Creative Commons License

Silicon Atom Electron Shell Diagram

This diagram shows the electron shell configuration of a silicon atom.
This diagram shows the electron shell configuration of a silicon atom. Greg Robson, Creative Commons License

Phosphorus Atom Electron Shell Diagram

This diagram shows the electron shell configuration of a phosphorus atom.
This diagram shows the electron shell configuration of a phosphorus atom. Greg Robson, Creative Commons License

Sulfur Atom Electron Shell Diagram

This diagram indicates the electron shell configuration of a sulfur atom.
This diagram indicates the electron shell configuration of a sulfur atom. Greg Robson, Creative Commons License

Chlorine Atom Electron Shell Diagram

This diagram shows the electron shell configuration of a chlorine atom.
This diagram shows the electron shell configuration of a chlorine atom. Greg Robson, Creative Commons License

Argon Atom Electron Shell Diagram

This diagram shows the electron shell configuration of an argon atom.
This diagram shows the electron shell configuration of an argon atom. Greg Robson, Creative Commons License

Potassium Atom Electron Shell Diagram

This diagram shows the electron shell configuration of a potassium atom.
This diagram shows the electron shell configuration of a potassium atom. Greg Robson, Creative Commons License

Calcium Atom Electron Shell Diagram

This diagram of a calcium atom shows the electron shell.
This diagram of a calcium atom shows the electron shell. Greg Robson,Creative Commonns License

Scandium Atom Electron Shell Diagram

This diagram of a scandium atom shows the electron shell.
This diagram of a scandium atom shows the electron shell. Greg Robson,Creative Commonns License

Titanium Atom Electron Shell Diagram

This diagram of a titanium atom shows the electron shell.
This diagram of a titanium atom shows the electron shell. Greg Robson,Creative Commonns License

Vanadium Atom Electron Shell Diagram

This diagram of a vanadium atom shows the electron shell.
This diagram of a vanadium atom shows the electron shell. Greg Robson,Creative Commonns License

Chromium Atom Electron Shell Diagram

This diagram of a chromium atom shows the electron shell.
This diagram of a chromium atom shows the electron shell. Greg Robson,Creative Commonns License

Manganese Atom Electron Shell Diagram

This diagram of a manganese atom shows the electron shell.
This diagram of a manganese atom shows the electron shell. Greg Robson,Creative Commonns License

Iron Atom Electron Shell Diagram

This diagram of an iron atom shows the electron shell.
This diagram of an iron atom shows the electron shell. Greg Robson,Creative Commonns License

Cobalt Atom Electron Shell Diagram

This diagram of a cobalt atom shows the electron shell.
This diagram of a cobalt atom shows the electron shell. Greg Robson,Creative Commonns License

Nickel Atom Electron Shell Diagram

This diagram of a nickel atom shows the electron shell.
This diagram of a nickel atom shows the electron shell. Greg Robson,Creative Commonns License

Copper Atom Electron Shell Diagram

This diagram of a copper atom shows the electron shell.
This diagram of a copper atom shows the electron shell. Greg Robson,Creative Commonns License

Zinc Atom Electron Shell Diagram

This diagram of a zinc atom shows the electron shell.
This diagram of a zinc atom shows the electron shell. Greg Robson,Creative Commonns License

Gallium Atom Electron Shell Diagram

This diagram of a gallium atom shows the electron shell.
This diagram of a gallium atom shows the electron shell. Greg Robson,Creative Commonns License

Germanium Atom Electron Shell Diagram

This diagram of a germanium atom shows the electron shell.
This diagram of a germanium atom shows the electron shell. Greg Robson,Creative Commonns License

Arsenic Atom Electron Shell Diagram

This diagram of an arsenic atom shows the electron shell.
This diagram of an arsenic atom shows the electron shell. Greg Robson,Creative Commonns License

Selenium Atom Electron Shell Diagram

This diagram of a selenium atom shows the electron shell.
This diagram of a selenium atom shows the electron shell. Greg Robson,Creative Commonns License

Bromine Atom Electron Shell Diagram

This diagram of a bromine atom shows the electron shell.
This diagram of a bromine atom shows the electron shell. Greg Robson,Creative Commonns License

Krypton Atom Electron Shell Diagram

This diagram of a krypton atom shows the electron shell.
This diagram of a krypton atom shows the electron shell. Greg Robson,Creative Commonns License

Rubidium Atom Electron Shell Diagram

This diagram of a rubidium atom shows the electron shell.
This diagram of a rubidium atom shows the electron shell. Greg Robson,Creative Commonns License

Strontium Atom Electron Shell Diagram

This diagram of a strontium atom shows the electron shell.
This diagram of a strontium atom shows the electron shell. Greg Robson,Creative Common License

Yttrium Atom Electron Shell Diagram

This diagram of a yttrium atom shows the electron shell.
This diagram of a yttrium atom shows the electron shell. Greg Robson,Creative Commonns License

Zirconium Atom Electron Shell Diagram

This diagram of a zirconium atom shows the electron shell.
This diagram of a zirconium atom shows the electron shell. Greg Robson,Creative Commonns License

Niobium Atom Electron Shell Diagram

This diagram of a niobium atom shows the electron shell.
This diagram of a niobium atom shows the electron shell. Greg Robson,Creative Commonns License

Molybdenum Atom Electron Shell Diagram

This diagram of a molybdenum atom shows the electron shell.
This diagram of a molybdenum atom shows the electron shell. Greg Robson,Creative Common License

Technetium Atom Electron Shell Diagram

This diagram of a technetium atom shows the electron shell.
This diagram of a technetium atom shows the electron shell. Greg Robson,Creative Commonns License

Ruthenium Atom Electron Shell Diagram

This diagram of a ruthenium atom shows the electron shell.
This diagram of a ruthenium atom shows the electron shell. Greg Robson,Creative Commonns License

Rhodium Atom Electron Shell Diagram

This diagram of a rhodium atom shows the electron shell.
This diagram of a rhodium atom shows the electron shell. Greg Robson,Creative Commonns License

Palladium Atom Electron Shell Diagram

This diagram of a palladium atom shows the electron shell.
This diagram of a palladium atom shows the electron shell. Greg Robson,Creative Commonns License

Silver Atom Electron Shell Diagram

This diagram of a silver atom shows the electron shell.
This diagram of a silver atom shows the electron shell. Greg Robson,Creative Commonns License

Cadmium Atom Electron Shell Diagram

This diagram of a cadmium atom shows the electron shell.
This diagram of a cadmium atom shows the electron shell. Greg Robson,Creative Commonns License

Indium Atom Electron Shell Diagram

This diagram of an indium atom shows the electron shell.
This diagram of an indium atom shows the electron shell. Greg Robson,Creative Commonns License

Tin Atom Electron Shell Diagram

This diagram of a tin atom shows the electron shell.
This diagram of a tin atom shows the electron shell. Greg Robson,Creative Commonns License

Antimony Atom Electron Shell Diagram

This diagram of an antimony atom shows the electron shell.
This diagram of a antimony atom shows the electron shell.This diagram of an antimony atom shows the electron shell. Greg Robson,Creative Commonns License

Tellurium Atom Electron Shell Diagram

This diagram of a tellurium atom shows the electron shell.
This diagram of a tellurium atom shows the electron shell. Greg Robson,Creative Commonns License

Iodine Atom Electron Shell Diagram

This diagram of an iodine atom shows the electron shell.
This diagram of a iodine atom shows the electron shell.This diagram of an iodine atom shows the electron shell. Greg Robson,Creative Commonns License

Xenon Atom Electron Shell Diagram

This diagram of a xenon atom shows the electron shell.
This diagram of a xenon atom shows the electron shell. Greg Robson,Creative Commonns License

Caesium Atom Electron Shell Diagram

This diagram of a caesium atom shows the electron shell.
This diagram of a caesium atom shows the electron shell. Greg Robson,Creative Commonns License

Barium Atom Electron Shell Diagram

This diagram of a barium atom shows the electron shell.
This diagram of a barium atom shows the electron shell. Greg Robson,Creative Commonns License

Lanthanum Atom Electron Shell Diagram

This diagram of a lanthanum atom shows the electron shell.
This diagram of a lanthanum atom shows the electron shell. Greg Robson,Creative Commonns License

Cerium Atom Electron Shell Diagram

This diagram of a cerium atom shows the electron shell.
This diagram of a cerium atom shows the electron shell. Greg Robson,Creative Commonns License

Praseodymium Atom Electron Shell Diagram

This diagram of a praseodymium atom shows the electron shell.
This diagram of a praseodymium atom shows the electron shell. Greg Robson,Creative Commonns License

Neodymium Atom Electron Shell Diagram

This diagram of a neodymium atom shows the electron shell.
This diagram of a neodymium atom shows the electron shell. Greg Robson,Creative Commonns License

Promethium Atom Electron Shell Diagram

This diagram of a promethium atom shows the electron shell.
This diagram of a promethium atom shows the electron shell. Greg Robson,Creative Commonns License

Samarium Atom Electron Shell Diagram

This diagram of a samarium atom shows the electron shell.
This diagram of a samarium atom shows the electron shell. Greg Robson,Creative Commonns License

Europium Atom Electron Shell Diagram

This diagram of an europium atom shows the electron shell.
This diagram of a europium atom shows the electron shell.This diagram of an europium atom shows the electron shell. Greg Robson,Creative Commonns License

Gadolinium Atom Electron Shell Diagram

This diagram of a gadolinium atom shows the electron shell.
This diagram of a gadolinium atom shows the electron shell. Greg Robson,Creative Commonns License

Terbium Atom Electron Shell Diagram

This diagram of a terbium atom shows the electron shell.
This diagram of a terbium atom shows the electron shell. Greg Robson,Creative Commonns License

Dysprosium Atom Electron Shell Diagram

This diagram of a dysprosium atom shows the electron shell.
This diagram of a dysprosium atom shows the electron shell. Greg Robson,Creative Commonns License

Holmium Atom Electron Shell Diagram

This diagram of a holmium atom shows the electron shell.
This diagram of a holmium atom shows the electron shell. Greg Robson,Creative Commonns License

Erbium Atom Electron Shell Diagram

This diagram of a erbium atom shows the electron shell.
This diagram of a erbium atom shows the electron shell. Greg Robson,Creative Commonns License

Thulium Atom Electron Shell Diagram

This diagram of a thulium atom shows the electron shell.
This diagram of a thulium atom shows the electron shell. Greg Robson,Creative Commonns License

Ytterbium Atom Electron Shell Diagram

This diagram of a ytterbium atom shows the electron shell.
This diagram of a ytterbium atom shows the electron shell. Greg Robson,Creative Commonns License

Lutetium Atom Electron Shell Diagram

This diagram of a lutetium atom shows the electron shell.
This diagram of a lutetium atom shows the electron shell. Greg Robson,Creative Commonns License

Hafnium Atom Electron Shell Diagram

This diagram of a hafnium atom shows the electron shell.
This diagram of a hafnium atom shows the electron shell. Greg Robson,Creative Commonns License

Tantalum Atom Electron Shell Diagram

This diagram of a tantalum atom shows the electron shell.
This diagram of a tantalum atom shows the electron shell. Greg Robson,Creative Commonns License

Tungsten Atom Electron Shell Diagram

This diagram of a tungsten atom shows the electron shell.
This diagram of a tungsten atom shows the electron shell. Greg Robson,Creative Commonns License

Rhenium Atom Electron Shell Diagram

This diagram of a rhenium atom shows the electron shell.
This diagram of a rhenium atom shows the electron shell. Greg Robson,Creative Commonns License

Osmium Atom Electron Shell Diagram

This diagram of an osmium atom shows the electron shell.
This diagram of an osmium atom shows the electron shell. Greg Robson,Creative Commonns License

Iridium Atom Electron Shell Diagram

This diagram of an iridium atom shows the electron shell.
This diagram of an iridium atom shows the electron shell. Greg Robson,Creative Commonns License

Platinum Atom Electron Shell Diagram

This diagram of a platinum atom shows the electron shell.
This diagram of a platinum atom shows the electron shell. Greg Robson,Creative Commonns License

Gold Atom Electron Shell Diagram

This diagram of a gold atom shows the electron shell.
This diagram of a gold atom shows the electron shell. Greg Robson,Creative Commonns License

Mercury Atom Electron Shell Diagram

This diagram of a mercury atom shows the electron shell.
This diagram of a mercury atom shows the electron shell. Greg Robson,Creative Commonns License

Thallium Atom Electron Shell Diagram

This diagram of a thallium atom shows the electron shell.
This diagram of a thallium atom shows the electron shell. Greg Robson,Creative Commonns License

Lead Atom Electron Shell Diagram

This diagram of a lead atom shows the electron shell.
This diagram of a lead atom shows the electron shell. Greg Robson,Creative Commonns License

Bismuth Atom Electron Shell Diagram

This diagram of a bismuth atom shows the electron shell.
This diagram of a bismuth atom shows the electron shell. Greg Robson,Creative Commonns License

Polonium Atom Electron Shell Diagram

This diagram of a polonium atom shows the electron shell.
This diagram of a polonium atom shows the electron shell. Greg Robson,Creative Commonns License

Astatine Atom Electron Shell Diagram

This diagram of an astatine atom shows the electron shell.
This diagram of a astatine atom shows the electron shell.This diagram of an astatine atom shows the electron shell. Greg Robson,Creative Commonns License

Radon Atom Electron Shell Diagram

This diagram of a radon atom shows the electron shell.
This diagram of a radon atom shows the electron shell. Greg Robson,Creative Commonns License

Francium Atom Electron Shell Diagram

This diagram of a francium atom shows the electron shell.
This diagram of a francium atom shows the electron shell. Greg Robson,Creative Commonns License

Radium Atom Electron Shell Diagram

Electron shell diagram for radium.
Electron shell diagram for radium. Greg Robson

Actinium Atom Electron Shell Diagram

This diagram of an actinium atom shows the electron shell.
This diagram of an actinium atom shows the electron shell. Greg Robson,Creative Common License

Thorium Atom Electron Shell Diagram

This diagram of a thorium atom shows the electron shell.
This diagram of a thorium atom shows the electron shell. Greg Robson,Creative Commonns License

Protactinium Atom Electron Shell Diagram

This diagram of a protactinium atom shows the electron shell.
This diagram of a protactinium atom shows the electron shell. Greg Robson,Creative Commonns License

Uranium Atom Electron Shell Diagram

This diagram of a uranium atom shows the electron shell.
This diagram of a uranium atom shows the electron shell. Greg Robson,Creative Commonns License

Neptunium Atom Electron Shell Diagram

Electron shell diagram of neptunium.
Electron shell diagram of neptunium. Greg Robson

Plutonium Atom Electron Shell Diagram

This diagram of a plutonium atom shows the electron shell.
This diagram of a plutonium atom shows the electron shell. Greg Robson,Creative Commonns License