Question

The electronic configurations of two elements A and B are given below: A. 2,6 B. 2,8,1 (ii) What can you say about the melting and boiling point of the compound formed between A and B ? (iii) Which element will form an anion ?

Answer 1

Explanation:

Compounds formed by A and B will have high melting and boiling points because a considerable amount of heat is required to break forces between them.

A will form an anion by gaining two electrons.

Answer 2

Explanation:

Given -

• Electronic configuration of A is 2,6
• Electronic configuration of B is 2,8,1

To Find -

1. Melting point and boiling point of the compound formed between A and B
2. Which element will form anion

It's given that,

Electronic configuration of A is 2,6

It means,

Atomic number is 8 and we know that Oxygen (O) has atomic number 8.

And

Electronic configuration of B is 2,8,1

It means,

Atomic number is 11 and we know that Sodium (Na) had atomic number 11.

Hence,

It is cleared that

Element A is O

and

Element B is Na.

The compound form between Na and O is sodium oxide (Na2O).

1)

It has High boiling point and melting point because it forms ionic Bond.

2)

Oxygen will form Anion because it is electronegative element.

Hence,

Element A forms Anion.