P Block

Question 1

What are P block elements?

Answer 1

The elements in which the last electron enters the p- subshell

Question 2

General outer electronic configuration of P block elements

Answer 2

nS2 NP 1-6

Question 3

why He is placed in grp 18 as it’s electronic cong. is 1S^2

Answer 3

As it’s a noble gas

Question 4

Which group is called Pnictogens?

Answer 4

Grp- 15

Question 5

Down the group, metallic character

Answer 5

Increases, as size inc and distance between the nucleus and the outermost e- inc therefore it’s easier for the element to lose an e.

Question 6

Occurrence of Nitrogen: In Atmosphere

Answer 6

N2, 78%

Question 7

Occurrence of Nitrogen: In the earth’s crust

Answer 7

1) Chile saltpetre - NaNO3

2) Indian saltpetre - KNO3

Question 8

Occurrence of Nitrogen in proteins

Answer 8

Amino acids

Question 9

Occurrence of Phosphorus

Answer 9

1) In the form of apatite family
2) Living system- Bones, RNA and DNA
3) Phoshoprotiens - Milk and eggs

Question 10

Occurrence of Arsenic, Bismuth and Antimony

Answer 10

mainly found in sulphide rocks

Question 11

Other names for Group 16 and 17

Answer 11

Chalcogens and halogens