Question

Plz answer this. I have an online test tomorrow..... ​

Answer 1

Answer:

Ans is B)

As we go down the group the reactivity of Non metal decreases due to nuclear shielding.

So moving up the group the reactivity of non-metal increases or going down the group reactivity of non metal decrease ( both are same)

The Rest options are incorrect as both non metals and metals are not present in all groups. Example : Alkali group has no Non Metal

The total number of electrons in every atom is different and ionization energy decreases down the group!

Answer 2

Answer:

B

Explanation:

A: Both metals and non metals are not present in all groups ,only group 13 contains both. Groups 14 ,15,16,17 contains metals non metals and metalloids. 18 contains only gases ; and all other groups contains only metals

B:correct

C: Ionisation energy decreases as we move down the group because size increases,nucler effective charge decreases

D: The no.of electrons can never be same for any element...

Hope it helps you....☺️

All the best for exams......☺️