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Borax is converted into crystalline boro...

Borax is converted into crystalline boron by the following steps `:`
Borex`overset(x)rarrH_(2)BO_(3)overset(Delta)rarrB_(2)O_(3)underset(Delta)overset(Y)rarrB`
X and Y are respectively `:`

A

HCl, Mg

B

HCl, C

C

C,Al

D

HCl, Al

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