Is 3f sub shell is allowed in an atom ?justify your answer

1.	Is 3f sub shell is allowed in an atom ?justify your answer
Answer» $\huge\green{Hello there}$ __________ Electronic configuration is given as :- 1s2 , 2S2, 2p6 3s2 , 3p6 , 3d10 4s2 , 4p6, 4D10 , 4f14 5S2, 5p6 , 5D10 , 5f14 SO .......... 3f subshell is not allowed I mean it isn't there . _________________ $\huge\red{INSHALLAH IT WILL HELP U }$

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