Which element has the same number of energy levels as aluminum (Al) and the same number of valence electrons as calcium (Ca)? A.

Question

nikklg [1K]

3 years ago

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Which element has the same number of energy levels as aluminum (Al) and the same number of valence electrons as calcium (Ca)? A.

Beryllium B. Sodium C. Potassium D. Magnesium

Chemistry

1 answer:

Rudik [331] · Answer 1 · 2022-04-08T21:48:27+03:00

The answer to this question would be: <span>D. Magnesium

The </span><span>number of energy levels of aluminum is 3 which was why it was put on the 3rd row. The valence of calcium is 2 which is why it was put in the 2nd column. If you look at the periodic table, the answer should be clear that it was magnesium.</span>