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On the basis of quantum numbers,justify that the sixth period of the periodic table should have $32$ elements.

Among the elements from atomic number $1$ to $36$,the number of elements which have an unpaired electron in their $s$-subshell is

How many orbitals are present in a $g$ subshell?

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The atomic numbers of elements $X, Y$ and $Z$ are $19, 21$ and $25$ respectively. The number of electrons present in the $M$-shell of these elements follow the order:

An element has $13$ electrons in the $M$ shell in its ground state. Which element could it be?

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