Question

which of the following remains unchanged on descending a group in periodic table .a) metallic character b) ionization energy c) valency electron d) number of shells​

Answer 1

Answer:     c)valency electron

Explanation:

because in each group the valence electrons remains unchanged

Answer 2

Answer: (c) Valence electron

Explanation: Elements of the same group have the same number of valence electrons; hence, valency will remain the same. All the remaining three properties increase down the group.

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