The value of n in the molecular formula is
Answer: 3
Solution
This is the formula for beryl, a beryllium aluminum silicate mineral. The formula is .
To verify, we can check the charge balance:
Total: +6 + 6 + 24 - 36 = 0 ✓
Therefore, n = 3.
To verify, we can check the charge balance:
- Be: 3 × (+2) = +6
- Al: 2 × (+3) = +6
- Si: 6 × (+4) = +24
- O: 18 × (-2) = -36
Total: +6 + 6 + 24 - 36 = 0 ✓
Therefore, n = 3.
JEE Advanced · 2010 · 11 Apr 2010 · Paper 1 · Integer answer