What is group 18 of the periodic table called? non-metals

metalloids

metals

noble gases

What are groups 1, 2, and 3 examples of on the periodic table?

metals

metalloids

non-metals

noble gases

Valence electrons are:

electrons in the outermost shell

all the electrons

electrons in the innermost shell

The elements in a group have similar properties because they have the same number of

protons

neutrons

valence electrons

atoms

Elements are more stable when they have how many valence electrons

7

5

2

8