First slide

Occurrence, Electronic Configuration

Question

Aluminium is obtained by

Moderate

A

electrolyzing ${Al}_{2} O_{3}$ dissolved in ${Na}_{3} {AlF}_{6}$
B

reducing ${Al}_{2} O_{3}$ with coke
C

reducing ${Al}_{2} O_{3}$ with chromium
D

heating ${Al}_{2} O_{3}$ and cryolite

Solution

Al from ${Al}_{2} O_{3}$ can be obtained only by electrolysis of fused ${Al}_{2} O_{3}$ dissolved in ${Na}_{3} {AlF}_{6}$

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