Question

in the following table six elements A B C D E and F of the modern periodic table with atomic number 3 to 18 and are given
ans the following que
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Answer 1

THE HALLOGENS IS F.

THE NOBLE GAS IS G.

IF B COMBINES WITH F THE THE COMPOUND IS NaCl.

the electronic configuration oxygen and magnesium are attached in form of images

Answer 2

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

Atomic number : 10

Electron configuration: 2 : 8

This one is in group 8 known as noble gases

a) i ) G

   ii) F

b) BF

c) C - 2 : 8 : 2

E - 2 : 6