An element Z has a combining power of 3. Which of the following formulae is correct of its compound?
- ZS3
- ZSO3
- ZS04
-
Z203
- Z3Cl2
The correct answer is: D
Explanation
Since element Z has a combining power of 3, the correct formulae will be Z\(_2\)O\(_3\). Which means that Oxygen has a valency of 2. However, as they combine both Z and O will exchange their valencies. i.e Z takes the 2 from O while O takes the 3 from Z. Hence the formula will be Z\(_2\)O\(_3\).