Chemistry
Ionisation energies of 4 elements A, B, C and D are 496, 403, 520 and 419 KJ/mol, respectively. If these elements belong to the same group in the Periodic Table, which element will occupy the top position in the group? Justify your answer.
Periodic Table
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Answer
Element C will be at the top of group because it has the highest ionisation energy, and ionisation energy decreases down the group.
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