Q55 / 200 · WBJEE 2013 · Chemistry

Identify the correct statement.

  • A
    Quantum numbers $(n, l, m, s)$ are arbitrarily
  • B
    All the quantum numbers $(n, 1, m, s)$ for any pair of electron in an atom can be identical under special circumstance
  • C
    All the quantum numbers $(n, 1, m, s)$ may not be required to describe an electron of an atom completely
  • Correct answer
    D
    All the quantum numbers $(n, 1, m, s)$ are required to describe an electron of an atom completely

Solution

All the quantum numbers $(n, l, m, s)$ are required to describe an electron of an atom completely. e.g., $n$ describes the position and energy of the electron in an orbit or shell. l is used to describe subshell and the shape of the orbital occupied by the electron. $m$ describes the preferred orientation of orbitals in space. s describes the spining of an electron on its axis.

Hence, the correct answer is option: 'D'.

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