The following statements concern elements in the periodic table. Which of the following is true?

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The Group 13 elements are all metals

Elements of Group 16 have lower ionization enthalpy values compared to these of Group 15 in the corresponding periods

All the elements in Group 17 are gases

For Group 15 elements, the stability of+5 oxidation state increases down the group

answer is B.

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Detailed Solution

The electronic configurations of elements of Group 16 correspond to $(n s)^{2} (n p)^{4}$ . These contain one extra electron as compared to half-filled configuration $(n p)^{3}$ of elements of Group 15. This extra electron can be released with lesser ionization enthalpy so as to give stable configurations.