Answer:
The answer to your question is below
Explanation:
1.- This is true, elements in group 2A are called Alkaline earth metals.
2.- Magnesium ionic radius = 72
Chlorine ionic radius = 99
False
3.- Group 18/8A elements are very unreactive elements known as noble gases. False
4.- True, elements in group 17/7A are called halogens.
5.- False. Metalloids have properties of both metals and nonmetals.
