Question

. Read the following and answer any four questions from 18(i) to 18(v).

The number of protons, neutrons and electrons in the sample are given below:

Elements Protons Neutrons Electrons

P 19 21 19

Q 20 20 20

R 17 18 17

S 17 20 17

(i) The element R is a

(a) metal (b) non-metal

(c) metalloid (d) none of these

(ii) What is the electronic configuration of element P?

(a) 2, 8, 7 (b) 2, 8, 8, 1

(c) 2, 8, 9 (d) 1,8, 8, 1​

Answer 1

Answer:

I don't if you no then please tell me because I m to much smaller in class