Principal quantum number determines:

size of orbital

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orbital angular momentum

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shape of the electronic cloud

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orientation of orbitals

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Solution

The correct option is A size of orbital
Principal quantum number ( $n$ ) determines the size of an orbital.
$n = 1, 2, 3, 4....$
Shell = K, L, M, N....

Hence, option A is correct.

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Similar questions

Question 21

Which of the following statements concerning the quantum numbers are correct ?

(a) The angular momentum quantum number determines the three-dimensional shape of the orbital

(b) The principal quantum number determines the orientation and energy of the orbital

(d). Spin quantum number of an electron determines the orientation of the spin of electron relative to the chosen axis.

C l^{-}

A r

C a^{2 +}

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