| List I (successive IE) | List II (Elements) | ||||
| \[I{{E}_{1}}\] | \[I{{E}_{2}}\] | \[I{{E}_{3}}\] \[(kJ\,mo{{l}^{-1}})\] | |||
| 1. | 1320 | - | - | A. | H |
| 2. | 520 | 7297 | 11810 | B. | Li |
| 3. | 900 | 1758 | 14810 | C. | Be |
| 4. | 800 | 2428 | 3660 | D. | B |
A) \[A-2,\,\,B-1,\,\,C-4,\,\,D-3\]
B) \[A-3,\,\,B-4,\,\,C-2,\,\,D-1\]
C) \[A-4,\,\,B-3,\,\,C-1,\,\,D-2\]
D) \[A-1,\,\,B-2,\,\,C-3,\,\,D-4\]
Correct Answer: D
Solution :
Successive ionisation energies of the given elements are as follows| \[I{{E}_{1}}\] | \[I{{E}_{2}}\] | \[I{{E}_{3}}\] | ||
| H | \[1{{s}^{2}}\] | 1312.0 | - | - |
| Li | \[1{{s}^{2}},\,\,2{{s}^{1}}\] | 518.0 | 7314 | 11810 |
| Be | \[1{{s}^{2}},\,\,2{{s}^{2}}\] | 899.9 | 1758 | 14810 |
| B | \[1{{s}^{2}},\,\,2{{s}^{2}},\,\,2{{p}^{1}}\] | 801 | 2460 | 3644 |
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