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Symbols
Valence Electrons
Electrons
100

The symbol for Carbon.

What is C?

100
The number of valence electrons for carbon.
What is 4?
100
The number of electrons in an atom of hydrogen.
What is 1?
200
The symbol for hydrogen.
What is H?
200
The number of valence electrons in an atom of oxygen.
What is 6?
200
The number of electrons in an atom of argon.
What is 18?
300
The symbol for potassium.
What is K?
300
The number of valence electrons in an atom of argon.
What is 8?
300
The number of electrons in an atom of potassium.
What is 19?
400
The symbol for sulfur.
What is S?
400
The number of valence electrons in an atom of sodium?
What is 1?
400

How many electrons does nitrogen have?

7

500

The symbol for tin?

What is Sn?

500
The number of valence electrons in an atom of bromine.
What is 7?