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20 October, 13:22

What element is in group 13 and period 3?

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Answers (2)
  1. 20 October, 13:28
    0
    39

    Explanation:

    because 13 * 3 = groups
  2. 20 October, 13:50
    0
    The name of the element is gallium and the number is 31
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