State which is inert gas?

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Solution

The correct option is A B
Atom Configuration
Valency
Nature
A 2, 5 -3 Non metal
B 2, 8, 8 0 Inert gas
C 2, 8, 3 +3 Metal
D 2, 8, 8 0 Inert gas
E 2, 8, 8, 1 +1 Metal

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Similar questions

T l^{+}

Elements A, B and C have atomic numbers 17, 19 and 10 respectively.
State which one is:
i) A non-metal
ii) A metal
iii) Chemically inert.

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