Question

(a), name the element which will form only covalent compound ?(b) which element is a metal with valency one ?(c) which element is a non metal with valency two? (d) out of D and E which has a bigger atomic radius and why ?​

Answer 1

Answer:

a. E - covalent compound

b. D - valency is 1

c. B - valency is 2

d. D has bigger atomic radius becoz, the increase in the number of protons and electrons across a period. One proton has a greater effect than one electron so electrons are pulled towards the nucleus, resulting in a smaller radius. Also called poor shielding effect.

In D it has less neutrons E has more neutrons so E will try to pull maximum due to more energy in it than less neutron D. So the radius shrinks in E.

THANK YOU

Answer 2

I hope answer is helpful to us