Please Help

61. If elements of principal quantum number
n > 4 were not allowed in nature, the
number of possible elements will be
(1) 4 (2) 32 (3) 60 (4) 64

pls give explanation
thanks...

5 Answers

hey this is easy
so just consider elemnt still n=3

thats it if u noe d periodic table

i know tat way .....so no other way eh?[2]

ya one more way ..........
close ur eyes ...................take ur pencil ,,.......bhagwan ka naam lo .......n jahan pencil ruke wahi asnwer hai :P

ans. is 60.the last element would be 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14
max. no of electrons=60.

kali raat wats the ans btw

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