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Classification of Elements and Periodicity in Properties
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26/08/2021 12:21 pm
Topic starter
Which of the following statements is wrong?
(a) van der Waal’s radius of iodine is more than its covalent radius
(b) All isoelectronic ions belong to same period of the periodic table
(c) I.E1 of N is higher than that of O while I.E2 of O is higher than that of N
(d) The electron gain enthalpy of N is almost zero while that of P is 74.3 kJ mol–1
1 Answer
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26/08/2021 12:22 pm
Correct answer: (b) All isoelectronic ions belong to same period of the periodic table
Explanation:
In the isoelectronic species, all isoelectronic anions belong to the same period and cations to the next period.