Going down Group 1 from lithium to potassium, the reactivity with water

Answer and explanation

Correct answer: C. increases

  1. Step 1: The outer electron is further from the nucleus and is lost more easily. Answer: increases. Why not the others: decreases: The outer electron is lost more easily as the atom gets larger. stays the same: The metals react more violently down the group. first increases then decreases: The trend is a steady increase.

Practise more Atomic structure and the periodic table.

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