Question

Answer the following questions regarding element X whose atomic number is 15:
a) What is its electronic configuration?
b) To which group does it belong?
c) To which period does it belong?
d) What is its valency?
e) Is it a metal or a non metal?
f) What is the formula of its compound with
sodium?

Answer 1

Answer:1. Phosphorus = 1s2 2s2 2p6 3s2 3p3

2. It belongs to 15 group

3. Period =3

4. Valency =4or5

5. Phosphorus is a non metal

6. Na3PO4

Explanation: