List -I List -2 A. IVA group 1. Crystalline form B. Onyx 2 Amorphous form of silica C. Lubricant 3. Graphite D. Hardest material 4.ns2 np2 5. Diamond The correct match with A B C D is ?
2 4 3 5
2 3 5 4
4 2 3 5
5 3 2 4
A
4 2 3 5
B
2 4 3 5
C
2 3 5 4
D
5 3 2 4
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Solution
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IV A Group has 4 valence electrons and are arranged as ns2np2.
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