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Question

Which of the following group 13 elements is non-reactive in crystallic form?

A
Aluminum
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B
Galliurn
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C
Boron
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D
Thallum
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Solution

The correct option is C Boron
Solution:- (C) Boron
Crystalline boron is very pure form and normally the pure form is unreactive. The crystalline boron is very hard solid. It has a quasi crystalline form. Because of all these boron is unreactive in air in its crystalline form.

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