MCQ
On moving down a group, the number of valence electrons ________ .
- ✓remains the same
- Bincreases
- Cdecreases
- DAll of These
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| pH of ammonia at start | pH after excess sulphuric acid | |
| A | 11 | 7 |
| B | 7 | 13 |
| C | 11 | 2 |
| D | 3 | 8 |