MCQ
Elements which generally exhibit multiple oxidation states and whose ions are usually coloured are
- AMetalloids
- ✓Transition elements
- CNon-metals
- DGases
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| Period number | Group number | |
| $P$ | $2$ | $15$ |
| $Q$ | $3$ | $2$ |
Then formula of the compound formed by $P$ and $Q$ element is
