Which of the following groupings contains only representative elements:

Which of the following groupings contains only representative elements: a. cu, co, cd or b. al, mg, li? ?

Answers

The correct answer is b. al, mg, li

That's because Cobalt is not a representative element since it's not found in the first 2 or the last 6 groups.

Al, Mg, Li

those are the groupings that contain only representative elements.

The correct answer is b. al, mg, li

That's because Cobalt is not a representative element since it's not found in the first 2 or the last 6 groups.

Explanation:

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