An element has atomic number 17. Where would you expect this element i

1.	An element has atomic number 17. Where would you expect this element in the Periodic Table? Why?
Answer» 1. Electronic configuration of the given element is 1s² 2s² 2p⁶ 3s² 3p⁵. 2. So, it is in 3rd period and 17th group of periodic table. 3. Due to the valency electronic configuration of 3s² 3p⁵ it belongs to 3rd period and 17th group.

An element has atomic number 17. Where would you expect this element in the Periodic Table? Why?

Answer»

1. Electronic configuration of the given element is 1s² 2s² 2p⁶ 3s² 3p⁵.

2. So, it is in 3rd period and 17th group of periodic table.

3. Due to the valency electronic configuration of 3s² 3p⁵ it belongs to 3rd period and 17th group.