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Physical Properties of Boron Family

Crystalline b...

Question

Crystalline boron reacts with air at high temperatures.

A

True

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B

False

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Solution

The correct option is B False

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Q. Crystalline boron reacts with air at high temperatures.

Both the amorphous and crystalline forms of boron are very reactive in air.

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Q. why and how an amorphous solid gets converted into crystalline solid with a high temperature?

Q. The enthalpy of transition of crystalline boron to amorphous boron at

1500^{o} C

{0.4 k c a l m o l}^{- 1}

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{k c a l m o l}^{- 1}

) of 50 g boron from crystalline to amorphous form is ______.

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Physical Properties of Boron Family

Standard XI Chemistry

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