Grade 8 4.2 More about the structure of the atom

The first 20 elements and their symbols in the ... ... .

Each element has an ... ... . This tells you how many protons it contains.

Each element has a ... ... . This tells you how many protons and neutrons each atom in the element has in total.

Protons have a ... charge. Electrons have a ... charge.

An atom has ... ... charge, because the number of protons is the same as the number of electrons.

The electrons are arranged in electron ... or ... around nucleus.

The first shell has only room for ... electrons.

Draw a diagram to show the structure of an atom of sodium?

What is the name of the element that has electrons arranged 2,8,8,2?