Question

plz answer those who know plz ​

Answer 1

Answer:

1.To answer this question we need to match the elements with their respective atomic numbers.

A

Atomic number : 3

Electron configuration: 2 : 1

This is a group 1 element known as Alkali metals.

B

Atomic number : 11

Electron configuration : 2 : 8 : 1

This is also in group 1.

C

Atomic number : 12

Electron configuration : 2 : 8 : 2

This is in group 2 and is known as Alkaline earth metals.

D

Atomic number : 14

Electron configuration : 2 : 8 : 4

This is in group 4

E

Atomic number : 8

Electron configuration : 2 : 6

This is in group 6.

F

Atomic number : 17

Electron configuration : 2 : 8 : 7

This is in group 7 otherwise known as halogens.

G

Atom

Answer 2

Answer:ans (a)

Noble gas is G

and halogen is F

(b) the formula of compound is BF that means one electron of B goes to F to complete it's octect.

ans (c) . 2,8,2