(C) The ionization energy $(IE)$ for a hydrogen-like species is given by the formula: $IE_n = 13.6 \times Z^2 / n^2 \ eV$. For the second ionization o

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(C) The ionization energy $(IE)$ for a hydrogen-like species is given by the formula: $IE_n = 13.6 \times Z^2 / n^2 \ eV$. For the second ionization of $He$ $(He^+ \rightarrow He^{2+} + e^-)$, the electron is removed from the $n=1$ state of a $He^+$ ion, which has an atomic number $Z=2$. Substituting these values: $IE = 13.6 \times (2^2 / 1^2) \ eV = 13.6 \times 4 \ eV = 54.4 \ eV$.

Class 11 Chemistry Structure of Atom Atomic models and Planck's quantum theory

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If the first ionization energy of $H$ atom is $13.6 \ eV,$ then the second ionization energy of $He$ atom is (in $eV$)

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A
$27.2$
B
$40.8$
C
$54.4$
D
$108.8$

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Structure of Atom

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Atomic models and Planck's quantum theory

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If the first ionization energy of $H$ atom is $13.6 \ eV,$ then the second ionization energy of $He$ atom is (in $eV$)

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Explain the phenomenon of black body radiation.

The threshold frequency $v_{0}$ for a metal is $7.0 \times 10^{14} \,s^{-1}.$ Calculate the kinetic energy of an electron emitted when radiation of frequency $v = 1.0 \times 10^{15} \,s^{-1}$ hits the metal.

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With increasing Principal Quantum number,the energy difference between adjacent energy levels in $H$ atom:

Which of the following statements is correct regarding the properties of hydrogen-like species?

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