Join Our JEE Preparation Group
Prep with like-minded aspirants; Get access to free daily tests and study material.
Sign in
Please select an account to continue using cracku.in
↓ →
Join Our JEE Preparation Group
Prep with like-minded aspirants; Get access to free daily tests and study material.
The value of $$n$$ in the molecular formula $$\text{Be}_n\text{Al}_2\text{Si}_6\text{O}_{18}$$ is ___
Correct Answer: 3
The compound is neutral, so $$2n + 2(3) + 6(4) - 18(2) = 0$$, i.e. $$2n + 30 - 36 = 0$$. This gives $$n = 3$$; the mineral is beryl, $$\text{Be}_3\text{Al}_2\text{Si}_6\text{O}_{18}$$.
Was this solution helpful?
Predict your JEE Main percentile, rank & performance in seconds
Educational materials for JEE preparation
Ask our AI anything
AI can make mistakes. Please verify important information.
AI can make mistakes. Please verify important information.