Consider the following:
$I$. The electron spin quantum number describes the orientation of the spin of the nucleus with respect to the magnetic field.
$II$. The orbitals represented by the quantum numbers $n=3, l=2, m=+2$ and $n=3, l=2, m=-2$ have the same energy.
$III$. The energy of a photon is directly proportional to wavelength but inversely proportional to wave number.
$IV$. Lyman series of lines appear in ultra-violet region.
The correct statements are:
$I$. The electron spin quantum number describes the orientation of the spin of the nucleus with respect to the magnetic field.
$II$. The orbitals represented by the quantum numbers $n=3, l=2, m=+2$ and $n=3, l=2, m=-2$ have the same energy.
$III$. The energy of a photon is directly proportional to wavelength but inversely proportional to wave number.
$IV$. Lyman series of lines appear in ultra-violet region.
The correct statements are:
- A$II$ $\&$ $IV$ only
- B$I$ $\&$ $II$ only
- C$II, III$ $\&$ $IV$ only
- D$I, III$ $\&$ $IV$ only
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Similar Questions
Match the following laws with their correct statements:
Laws Statements $(1)$ Hund's Rule $(A)$ No two electrons in an atom can have the same set of all four quantum numbers. $(2)$ Aufbau Principle $(B)$ Half-filled and fully-filled orbitals have greater stability. $(3)$ Pauli Exclusion Principle $(C)$ Electrons prefer to remain unpaired in degenerate orbitals first. $(4)$ Heisenberg's Uncertainty Principle $(D)$ It is impossible to determine simultaneously the exact position and exact momentum of an electron. $(E)$ In the ground state of atoms,orbitals are filled in the order of increasing energy.
| Laws | Statements |
|---|---|
| $(1)$ Hund's Rule | $(A)$ No two electrons in an atom can have the same set of all four quantum numbers. |
| $(2)$ Aufbau Principle | $(B)$ Half-filled and fully-filled orbitals have greater stability. |
| $(3)$ Pauli Exclusion Principle | $(C)$ Electrons prefer to remain unpaired in degenerate orbitals first. |
| $(4)$ Heisenberg's Uncertainty Principle | $(D)$ It is impossible to determine simultaneously the exact position and exact momentum of an electron. |
| $(E)$ In the ground state of atoms,orbitals are filled in the order of increasing energy. |
Medium
View SolutionConsider the following statements:
$(a)$ Photon is a positively charged nuclear particle
$(b)$ Size of nucleus is very small as compared to the size of atom
$(c)$ Photoelectric effect and diffraction show particle nature of light
$(d)$ Planck's constant has same dimensions as angular momentum
The correct statements is/are:
$(a)$ Photon is a positively charged nuclear particle
$(b)$ Size of nucleus is very small as compared to the size of atom
$(c)$ Photoelectric effect and diffraction show particle nature of light
$(d)$ Planck's constant has same dimensions as angular momentum
The correct statements is/are:
Difficult
View SolutionWhen the excited electron of a $H$ atom from $n=5$ drops to the ground state,the maximum number of emission lines observed are $.......$
Match the items in Column-$A$ with the items in Column-$B$.
Column-$A$ Column-$B$ $(1)$ Dalton $(A)$ Photoelectric effect $(2)$ Maxwell $(B)$ Wave theory $(3)$ Huygens $(C)$ Atomic theory $(D)$ Electromagnetic radiation
| Column-$A$ | Column-$B$ |
| $(1)$ Dalton | $(A)$ Photoelectric effect |
| $(2)$ Maxwell | $(B)$ Wave theory |
| $(3)$ Huygens | $(C)$ Atomic theory |
| $(D)$ Electromagnetic radiation |
Easy
View SolutionWhich of the following statements is $CORRECT$ :
$(I)$ Where orbitals are available in degenerate sets,maximum spin multiplicity is observed.
$(II)$ Where two electrons occupy the same shell,they may have same spins.
$(III)$ All noble gases do not have the same valence shell electronic configuration.
$(I)$ Where orbitals are available in degenerate sets,maximum spin multiplicity is observed.
$(II)$ Where two electrons occupy the same shell,they may have same spins.
$(III)$ All noble gases do not have the same valence shell electronic configuration.
Medium
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