Medium
The quantum number which explains the line spectra observed as doublets in the case of hydrogen and alkali metals, and doublets and triplets in the case of alkaline earth metals is:
- A$Spin$
- B$Azimuthal$
- C$Magnetic$
- D$Principal$
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Similar Questions
What is the maximum number of electrons that can be accommodated in a shell with principal quantum number $n = 4$?
Medium
View SolutionMatch the items in List-$A$ with the items in List-$B$ and select the correct option.
List-$A$ List-$B$ $(1)$ Principal quantum number $(A)$ Shape of the orbital $(2)$ Azimuthal quantum number $(B)$ Spin of the electron $(3)$ Magnetic quantum number $(C)$ Orientation of the orbital in space $(4)$ Spin quantum number $(D)$ Size of the orbital
| List-$A$ | List-$B$ |
| $(1)$ Principal quantum number | $(A)$ Shape of the orbital |
| $(2)$ Azimuthal quantum number | $(B)$ Spin of the electron |
| $(3)$ Magnetic quantum number | $(C)$ Orientation of the orbital in space |
| $(4)$ Spin quantum number | $(D)$ Size of the orbital |
Easy
View SolutionTwo electrons $A$ and $B$ in an atom have the following set of quantum numbers:
$A: n=3, l=2, m_l=-2, m_s=+1/2$
$B: n=3, l=0, m_l=0, m_s=+1/2$
What is true for $A$ and $B$?
$A: n=3, l=2, m_l=-2, m_s=+1/2$
$B: n=3, l=0, m_l=0, m_s=+1/2$
What is true for $A$ and $B$?
Easy
View SolutionThe orbital diagram in which the Aufbau principle is violated is:
$2s$ $2p_x$ $2p_y$ $2p_z$
$2s$ $2p_x$ $2p_y$ $2p_z$
MediumIIT 1988
View SolutionNumber of electrons in the outermost orbit of the element of atomic number $15$ is
Easy
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