Q.

Significance of principal quantum number is

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a

Orientation of atomic orbital

b

Shape of an atomic orbital

c

Size and energy of an atomic orbital

d

Spinning of an electron

answer is C.

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Detailed Solution

The principal quantum number, n and it indicates the energy of an electron and the most probable distance of the electron from the nucleus. In other words, it refers to the size of the orbital and the energy level an electron is placed in

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Significance of principal quantum number is