Question

What is the charge of the monatomic ion most likely to be formed by each of the following?

O

(a) +2

(b) +1

(c) ‒1

(d) ‒2

(e) ‒3

Mg

(a) +2

(b) +1

(c) ‒1

(d) ‒2

(e) ‒3

Which element contains most unpaired electrons in the ground state of its atom

(a) S

(b) Mg

(c) P

(d) Mn

(e) Cr

Answer 1

1)

O belongs to 6th group of periodic table

It has 6 electrons in valence shell

So, it can form -2 ion

Answer: d)-2

2)

Mg belongs to 2nd group of periodic table

It has 2 electrons in valence shell

So, it can form +2 ion

Answer: a)+2

I am allowed to answer only 1 question at a time