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Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties1 Mark
Question
An element belongs to 5th period and 3rd group, identify the element.
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Answer

Y(39): 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d1. The element is Ytterium(39).
It belongs to 5th period and 3rd group due to 3 valence electrons.

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