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28 September, 03:53

Select all the elements that are in the same period as calcium

potassium

magnesium

bromine

scandium

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Answers (1)
  1. 28 September, 04:29
    0
    Calcium is in group IIA in the periodic table. A Ca ion has a charge of 2+. In order to solve this problem you can either see the periodic table or just look for the charge of the elemetns they give you.

    K is group IA - charge of 2+

    Magnesium IIA - charge 2+

    Bromine VIIA charge of 1-

    Scandium IB

    The answer is B
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