Question

16. Electronic configuration of element
A,B,C and D are given
A:2,7
B:2,8,1
C:2,8,7
D:2,8,8
(a) Name the family of elements to
which 'A' belongs
(b) Which among the is a noble gas?
(c) Which of the elements belongs to
the same group?
(d) Give the formula of the compound
formed by A and B

please make it fast ​

Answer 1

Explanation:

a. halogens family

b. 2,8,8

c. elements A and C belong to the same group

d. f + na gives fna i.e fluorine + sodium gives fluorine chlroide

Answer 2

Explanation:

(a)A belongs to second period....non metal

(b) D is noble gas

(c) A and C belongs to same group

(d) A=Fluorine (F) and B=Sodium Na