Chemical Formular Writing

Question 1

Valence electrons

Answer 1

The total number of electrons that are found in the outermost energy level of an atom

Question 2

Valency

Answer 2

Number of electrons an atom must gain or lose in order to achieve a full outer most energy level hence reaching the most stable energy state it can

Question 3

Group number

Answer 3

This represents the total number of valence electrons that an atom has in its outer most energy level.

Question 4

Polyatomic ions

Answer 4

These are irons which are made up of combinations of two or more atoms that overall carry a charge