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Marilyn Haley
Mathematics
7 May, 11:48
Which element is a noble gas?
Sr As or Kr
+1
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Brynn Riddle
7 May, 11:54
0
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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Sincere Pugh
7 May, 12:04
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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
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