Find out the incorrect pair....

Find out the incorrect pair.

Tetragens-`ns^(2)np^(2)`

Icosagens`-ns^(2)np^(1)`

Chalcogens-`ns^(2)np^(4)`

Halogens`-ns^(2)np^(6)`

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The correct Answer is:

p-BLOCK ELEMENTS -I
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Find out the correct pair.

Ortho silicate- Soro silicate

Pyro silicate-Neso silicate

Chain silicate-Pyroxenes

Double chain silicate-Ring silicate

Diborane-Welding torches

`AlCl_(3)`-Eye lotion

Borax-pigments

boric acid-optical

Inert gas `-ns^(2)np^(1)`

Chalcogens-`ns^(2)np^(2)`

Pnictogens `-ns^(2)np^(3)`

Tetragens`-ns^(2)np^(4)`