An element E has 1
electron in its M shell? nhi
(i) What is its atomic number?
Answers
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0
Answer:
atomic number 24
Explanation:
Electronic configuration of Cr (atomic number 24) =[Ne]3s
2
3p
6
3d
5
4s
1
Therefore number of electrons in M shell (third shell) =2+6+5=13.
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