MCQ
The principal quantum number of an atom is related to the:
  • orientation of the orbital in space
  • B
    orbital angular momentum
  • C
    spin angular momentum
  • D
    size of the orbital

Answer

Correct option: A.
orientation of the orbital in space
a
It describes the orientations of the subshells. It can have values from $l$ to $+l$ including zero, i.e., total $(2 l+1)$ values. Each value corresponds to an orbital. subshell has one orbital, $p$-subshell three orbitals, $d$-subshell five orbitals and $f$-subshell has seven orbitals.

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