An element with atomic number 20 will be placed in which period of the periodic table ?

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An element with atomic number 20 will be placed in which period of the periodic table ?

ChemistryClassification of Elements and Periodicity in PropertiesNEET

Options:

A 1
B 2
C 3
D 4

Solution:

2558 Upvotes Verified Answer

The correct answer is: 4

{}_{20}{C a} = 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} {s p}^{6} 4 s^{2}

P e r i o d \Rightarrow 4^{t h}

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