Question

Which of the following groups have one valence electron and are very reactive? Column 1 alkali metals Column 2 alkaline earth metals Column 17 halogens Column 18 noble gases

Answer 1

Answer: A (column 1 alakine metals)

Step-by-step explanation:

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Answer 2

Answer is not Column 1 alkali metals.

Explanation: Got it wrong.

Which of the following groups have seven valence electrons and are very reactive?

Column 1 alkali metals

Column 2 alkaline earth metals

Column 17 halogens

Column 18 noble gases

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