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

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

All the elements in Group 1 are all metals

The Group 13 elements are all metals

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

answer is B.

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Half filled orbitals are more stable

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