Question

2.The valency shell configuration of an element with Z = 23 is

Answer 1

Answer:

If atomic weight is 23g then the atomic no. of that element is 11 i.e

Na. By octate rule the electrons in the shells will be (2)+(8)+(1) therefore 1 electon is present in valency shell..

Explanation:

Hope u get it...

Answer 2

Answer:

The Correct Answer is 2,8,8,5

Explanation:

As the first shell capacity is 2. second shell capacity is 8. third shell capacity is 8. fourth shell capacity is 16. Like This 5th:-16, 6th:-32, 7th:-32.