Answer the following questions if atomic number of element is 15. 1)

1.	Answer the following questions if atomic number of element is 15. 1) What is the name of the element? 2) What is the electronic configuration of element? 3) Which period and group does it belong to?4) How many valence electrons are there in the element? 5) What is the valency of the element?
Answer» 1. The element is phosporous, 2. The electronic configuration of element is 1s² 2s² 2p⁶ 3s² 3p³ or 2, 8, 5. 3. It belongs to 3rd period (orbit number is 3) and V or 15 group (Number of electrons in valence orbit is 5.) 4. Number of valence electrons are 5. 5. Its valency is 8 – 5 = 3.

Answer the following questions if atomic number of element is 15. 1) What is the name of the element? 2) What is the electronic configuration of element? 3) Which period and group does it belong to?4) How many valence electrons are there in the element? 5) What is the valency of the element?

Answer»

1. The element is phosporous,

2. The electronic configuration of element is 1s² 2s² 2p⁶ 3s² 3p³ or 2, 8, 5.

3. It belongs to 3rd period (orbit number is 3) and V or 15 group (Number of electrons in valence orbit is 5.)

4. Number of valence electrons are 5.

5. Its valency is 8 – 5 = 3.