Question

Write down the characteristics of element having atomic number17

Answer 1

Answer:

Explanation:

Characteristics:

1. It is called as halogen

2. It belongs to group number 17 and period number 3.

3.Number of valence electrons are 7.

4. It is a non metal

The electronic configuration of this element is:

1s

2

2s

2

2p

6

3s

2

3p

5

Answer 2

Answer:Chlorine has atomic number 17.

Electronic Configuration- 1s  2  2s  2  2p 6  3s  2  3p 5  .

Explanation: