Question

please answer this..........​

Answer 1

$\huge\underline\bold\color{crimson}\mathfrak{Answer}$

Element A

Atomic number:- 19

Electronic configuration:- 2,8,8,1

Element B

Atomic number:- 14

Electronic configuration:- 2,8,4

Element C

Atomic number:- 8

Electronic configuration:- 2,6

Element D

Atomic number:- 18

Electronic configuration:- 2,8,8

(a) The most electropositive metal - Element A

(b) A noble gas - Element D

(c) A metalloid - Element B

(d) An element which will gain 2 electrons to attain nearest noble gas configuration - Element C

(e)Formula of compound formed between A and C - A2C

(f) Elements belonging to the same period - Element B and D.