Question

"The atomic number of Lithium is 3." On the basis of this information answer the question that follows:
(a) Write the electronic configuration of Li
(b) To which group Li belong?
(c) Find valency of Li.
(d) Identify type of ion it will form.
(e) Write down the formula of the compound formed by it.

Answer 1

Explanation:

a) electronic configuration of lithium :- (2,1)

b) lithium belongs to group I

c) the valency of lithium is 1

d) can lithium can lost one electron and form Li*+ ion

Answer 2

Lithium (Li)

Explanation:

Given: Atomic number of Lithium (Li) is 3.

a) Electronic configuration of Lithium is: 2, 1

b) Lithium belongs to Group I of the period table.

c) Lithium has one electron in the outershell. So the valency of lithium is 1.

d) Lithium has the tendency to lose one electron to form the octet. So it form Li+ cation.

e) The formula for a compound formed by Lithium is, example, LiCl, Lithium Chloride where both have valency 1.