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10 June, 02:45

Which element is a noble gas?

Sr As or Kr

Answers (2)
  1. 10 June, 03:35
    Kr - Krypton

    Step-by-step explanation:

    Kr has an atomic number of 36 and falls under group 8. This can be determined also using the KLMN shells. so for Kr we have;

    k=2, L=8, M=18, N=8
  2. 10 June, 04:22
    Kr, Krypton is a noble gas

    Step-by-step explanation:

    it is in group 8a on the periodic table.

    ps ... this is chemistry, not math
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