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Transition and Inner Transition Elements — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryTransition and Inner Transition Elements2 Marks
Question
The atomic number of an element is $90$. Is this element diamagnetic or paramagnetic?
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Answer

The $90th$ element thorium has an electronic configuration, $[Rn] 6d^27s^2$.
​​​​​​​Since it has $2$ unpaired electrons it is paramagnetic.

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