How to find group number of helium in subshell electronic configuration?
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Answer: To find group no. accurately ..block must be known.
s Block -: The superscript over last alphabet(i.e s) is the group no, (Given example: sodium belongs to 1st group since its 3s1 and calcium is grp 2 since its 4s2) .
p Block-: The superscript number over the last alphabet(i.e P) +12
( for Al ..last alphabet is p1 so its grp no is 1+12=13)
d Block -: The superscript over the last(i.e d) alphabet + 2
(For Zn its 10 + 2 = 12)
f Block -: All elements of f block belong to group 3.
Explanation:
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