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Question
The following table shows the electronic configuration of the atoms A, B, C and D.
| Element | A | B | C | D |
| Electronic configuration | 2, 8, 8, 2 | 2, 6 | 2, 8, 7 | 2, 4 |
- Write the formula of the compound formed between:
- A and B
- D and C
- Which of the above elements will exhibit catenation?
Solution
(a) (1)
| Electronic Configuration | Valency | |
| A : | 2, 8, 8, 2 | + 2 |
| B : | 2, 6 | - 2 |
Formula: AB
(2)
| Electronic Configuration | Valency | |
| D : | 2, 4 | ± 4 |
| C : | 2, 8, 7 | - 1 |
Formula: DC4
(b) 'D' will exhibit catenation.
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