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4f-subshell of an atom contains 10 elect...

4f-subshell of an atom contains 10 electrons. How many of these electrons will have parallel spin?

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The 10 electrons are arranged in the 4f-subshell as follows.
.No. of electgrons with parallel spin=7
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CHHAYA PUBLICATION-STRUCTURE OF ATOM-WARM UP EXERCISE
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  9. Write the electronic configurations of Fe^(2+) and Cu^(+) ions.

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  11. Calculate the number of unpaired electrons in N-atom.

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  12. How many electrons of Ne-atom have clockwise spin?

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  18. how many nodal points are there in 3p-orbital?

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