Question

Extremely electropositive metals are present in ________ and ________ groups.

• A. IA
• B. IIA

Answer 1

1. Electropositive metals :Elements that are present in the extreme left portion of the periodic table have one(IA) and two(IIA) electrons extra in the valence shell. These elements have greater tendency to lose electrons and attain a stable nearest inert gas configuration and hence are electropositive metals.

Example: Li, Na, K , Rb, Cs (IA)

Be, Mg, Ca, Sr, Ba (IIA)

Hence, IA and IIA elements are highly electropositive metals.

Thus, Extremely electropositive metals are present in IA and IIA groups.