Class 11

20. p- block elements question bank (Chemistry)

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Q1.

Which of the following is not a correct statement?  

(A)
Multiple bonds are always shorter than corresponding single bonds
(B)
The electron-deficient molecules can act as Lewis acids
(C)
The canonical structures have no real existence
(D)
Every AB₅ molecule does in fact have square pyramidal structure.
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Q2.

Which one of the following anions is present in the chain structure of silicates:  

(A)
SiO₄⁴⁻
(B)
Si₂O₇⁶⁻
(C)
(Siâ‚‚Oâ‚…²â»)â‚™
(D)
(SiO₃²â»)â‚™
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