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15 August, 22:29

Which of the following elements are alkaline earth metals?

Check all that apply.

barium

lithium

aluminium

calcium

sodium

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  1. 15 August, 22:44
    0
    The alkaline earth metals are barium and calcium.

    Explanation:

    Alkaline earth metals is the denomination given to the six elements that occupy Group 2 in the Periodic Table, therefore they have an electron configuration that ends in the orbital s².

    From the list: barium and calcium are alkaline earth metals. On the other hand, lithium and sodium occupy Group 1, and aluminum occupies Group 3.
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