Atoms

How many electrons can the first shell have?

How many neutrons does Argon have?

Which subatomic particle has a positive charge?

How is the atomic number of an element decided?

How can you find out the number of neutrons an element has?

What is the smallest subatomic particle?

Which element has more protons, helium or carbon?

How many electrons does Carbon have?

Which particle has a negative charge?

In a periodic table, are groups vertical or horizontal?

Which two particles does the nucleus consist of?

O is short for...

True or false. The atomic mass of an element is equal to the number of electrons and protons it has.

Which subatomic particle has no charge?

Where do electrons live?