MCQ
Group $13$ elements are attacked by non$-$oxidising acids except:
- AAluminium
- BGallium
- CIndium
- ✓Boron
✓
Answer
Correct option: D.
Boron
Boron is not attacked by non-oxidising acids such as $\text{HCl}$ but reacts with oxidising acids such as conc. $\mathrm{HNO}_3$ and conc. $\mathrm{H}_2 \mathrm{SO}_4$ forming boric acid.
Boron, being chemically a non$-$metal, is resistant to attack by non$-$oxidising acids but the other members of the group react with non$-$oxidising acids as typical metals and evolve hydrogen.
Boron, being chemically a non$-$metal, is resistant to attack by non$-$oxidising acids but the other members of the group react with non$-$oxidising acids as typical metals and evolve hydrogen.
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