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How Amorphous boron of 95% to 98% purity...

How Amorphous boron of 95% to 98% purity is obtained ?

A

heating `B_(2)O_(3)` with `H_(2)`

B

heating `B_(2)O_(3)` with `Mg` or `Na` at high temperature.

C

heating `KBF_(4)` with `Na` or `K`.

D

heating `BBr_(3)` with `H_(2)` in presence of a catalyst.

Text Solution

Verified by Experts

The correct Answer is:
B
`B_(2)O_(3)+3Mg` or `Naunderset(Delta)overset("High temperature")to2B+3MgO //Na_(2)O`
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