The successive ionisation enthalpies of a main group element are 940,2080,3090,4140,7030,7870,16000 and 19500kJ mol−1. The group to which the element belong is
A
14
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B
15
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C
16
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D
17
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Solution
The correct option is C16 As greatest difference occurs between IE6 and IE7 the element has 6 electrons in the outermost shell. i.e., it belongs to 16th Group of the periodic table.