Assertion $:-$ Emitted radiation will fall in the visible region when an electron jumps from $n=4$ to $n=2$ in a hydrogen atom.
Reason $:-$ The frequency of radiation of the Lyman series belongs to the visible region for a hydrogen atom.
Reason $:-$ The frequency of radiation of the Lyman series belongs to the visible region for a hydrogen atom.
- ABoth Assertion $\&$ Reason are True $\&$ the Reason is a correct explanation of the Assertion.
- BBoth Assertion $\&$ Reason are True but Reason is not a correct explanation of the Assertion.
- CAssertion is True but Reason is False.
- DBoth Assertion $\&$ Reason are False.
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Similar Questions
What is the energy associated with the fourth orbit of a hydrogen atom?
$R_H = 2.18 \times 10^{-18} \ J$
$R_H = 2.18 \times 10^{-18} \ J$
Identify the pair of species having the same energy from the following (The number given in the bracket corresponds to the principal quantum number $(n)$ in which the electron is present).
The work function of $Cu$ is $7.68 \times 10^{-19} \ J$. If photons of wavelength $221 \ nm$ are made to strike the surface of the metal,the kinetic energy (in $J$) of the ejected electrons will be $\left(h=6.63 \times 10^{-34} \ Js, c=3 \times 10^8 \ ms^{-1}\right)$.
Match the principles given in List-$I$ with their discoverers given in List-$II$.
List-$I$ List-$II$ $(1)$ Exclusion Principle $(A)$ Hund $(2)$ Multiplicity Rule $(B)$ Heisenberg $(3)$ Uncertainty Principle $(C)$ Einstein $(4)$ Quantum Theory $(D)$ Planck $(E)$ Pauli
| List-$I$ | List-$II$ |
| $(1)$ Exclusion Principle | $(A)$ Hund |
| $(2)$ Multiplicity Rule | $(B)$ Heisenberg |
| $(3)$ Uncertainty Principle | $(C)$ Einstein |
| $(4)$ Quantum Theory | $(D)$ Planck |
| $(E)$ Pauli |
Easy
View SolutionThe value of Planck's constant is $6.63 \times 10^{-34} \, J \cdot s$ and the speed of light is $3.0 \times 10^8 \, m \cdot s^{-1}$. The wavelength of a quantum of light with a frequency of $8 \times 10^{15} \, s^{-1}$ is closest to which of the following values in meters?
Medium
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