Physical Chemistry MCQ with Answers

Physical Chemistry MCQ with Answers

76) Which one of the following metal oxides is antiferromagnetic in nature?

Answer is:

MnO₂

77) A fcc unit cell of aluminium contains the equivalent of how many atoms?

Answer is:

4

78) For an ionic crystal of the general formula AX and coordination number 6, the value of radius will be:

Answer is:

In between 0.732 and 0.414

Explanation:

The structure arrangement of coordination number 6 is octahedral and its radius ratio is 0.414 − 0.732.

79) In octahedral holes (voids):

Answer is:

A bi−triangular void is surrounded by 6 spheres

80) The edge of unit cell of fcc Xe crystal is 620 pm. The radius of Xe atom is:

Answer is:

219.25 pm

Explanation:

r = a⁄2√2

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