InterviewSolution
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InterviewSolution
| 1. |
Elements A, B, C, and D have atomic numbers 1, 8, 11, and 19 respectively. Choose the odd element and give reason for your answer. |
| Answer» SOLUTION : Electronic CONFIGURATIONS are: `A to 1 , B to 2 , 6 , C to 2, 8 , 1`,and `D to 2,8,8,1`. Elements A, C, and D have one VALENCE electron each while B has 8 - 6 = 2 valence ELECTRONS. Hence, B is the odd element. | |