Question

Explain how does chemical reactivity vary in metals​

Answer 1

Explanation:

The reactivity of an element belonging to metals increase on moving from top to bottom in a group of the periodic table. ... Thus, the tendency of losing the valence electron/s increases and their chemical reactivity increases on moving from top to bottom in a group of metals.

Answer 2

ANSWER : (I) it regulate the temperature.

(ii) it maintain CO2 and O2 in the atmosphere.

(iii) it provides food.

(iv) it provides shelter for wildlife and animal.