Easy
Which of the following electronic configurations is not possible according to Hund's rule?
- A$1s^2 \, 2s^2$
- B$1s^2 \, 2s^1$
- C$1s^2 \, 2s^2 \, 2p_x^1 \, 2p_y^1 \, 2p_z^1$
- D$1s^2 \, 2s^2 \, 2p_x^2$
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Two electrons occupying the same orbital are distinguished by
The magnetic quantum number $m_l$ is determined by the azimuthal quantum number $l$. If $l = 2$,what are the type and number of orbitals indicated?
Easy
View SolutionThe atomic number of the element (in ground state) having the maximum number of unpaired $3p$ electrons is:
Medium
View SolutionConsider the following sets of quantum numbers $(n, l, m_l)$:
Set $(n, l, m_l)$ $A$ $(3, 3, -3)$ $B$ $(3, 2, -2)$ $C$ $(2, 1, +1)$ $D$ $(2, 2, +2)$
The number of correct sets of quantum numbers is $....$.
| Set | $(n, l, m_l)$ |
|---|---|
| $A$ | $(3, 3, -3)$ |
| $B$ | $(3, 2, -2)$ |
| $C$ | $(2, 1, +1)$ |
| $D$ | $(2, 2, +2)$ |
The number of correct sets of quantum numbers is $....$.
Which of the following is not correct for the electron distribution in the ground state for $4s$ and $3d$ orbitals?
MediumAIIMS 1982
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