(D) In Bohr's model,the time period of revolution $T$ is given by the relation $T \propto \frac{n^3}{Z^2}$.For $T_{1,2}$,$n = 1$ and $Z = 2$,so $T_{1,

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(D) In Bohr's model,the time period of revolution $T$ is given by the relation $T \propto \frac{n^3}{Z^2}$.For $T_{1,2}$,$n = 1$ and $Z = 2$,so $T_{1,2} \propto \frac{1^3}{2^2} = \frac{1}{4}$.For $T_{2,1}$,$n = 2$ and $Z = 1$,so $T_{2,1} \propto \frac{2^3}{1^2} = \frac{8}{1} = 8$.Therefore,the ratio $T_{1,2} : T_{2,1} = \frac{1}{4} : 8 = 1 : 32$.

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

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If in Bohr's model,for a unielectronic atom,the time period of revolution is represented as $T_{n,Z}$ where $n$ represents the shell number and $Z$ represents the atomic number,then the value of $T_{1,2} : T_{2,1}$ will be

A
$8 : 1$
B
$1 : 8$
C
$1 : 1$
D
$1 : 32$

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Class 11

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Structure of Atom

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Atomic models and Planck's quantum theory

The ionization energy of $He^+$ is $19.6 \times 10^{-18} \ J \ atom^{-1}$. What is the energy of the first stationary state $(n = 1)$ of $Li^{2+}$?

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In a hydrogen atom,the energy difference between the states $n = 2$ and $n = 3$ is $E \ eV$. The ionization energy of the $H$-atom is: (in $E$)

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The energy required to excite an electron from the first orbit to the third orbit in a hydrogen atom is .......... $eV$.

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Which of the following results is not true about the photoelectric effect?

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$A$ $100 \ W$ bulb emits light of wavelength '$x$' $\mathring{A}$. What is the value of $x$, if the number of photons emitted is $2.0 \times 10^{20} \ s^{-1}$? $(h = 6.63 \times 10^{-34} \ J \cdot s, c = 3 \times 10^8 \ m \cdot s^{-1})$

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If in Bohr's model,for a unielectronic atom,the time period of revolution is represented as $T_{n,Z}$ where $n$ represents the shell number and $Z$ represents the atomic number,then the value of $T_{1,2} : T_{2,1}$ will be

Similar Questions

The ionization energy of $He^+$ is $19.6 \times 10^{-18} \ J \ atom^{-1}$. What is the energy of the first stationary state $(n = 1)$ of $Li^{2+}$?

In a hydrogen atom,the energy difference between the states $n = 2$ and $n = 3$ is $E \ eV$. The ionization energy of the $H$-atom is: (in $E$)

The energy required to excite an electron from the first orbit to the third orbit in a hydrogen atom is .......... $eV$.

Which of the following results is not true about the photoelectric effect?

$A$ $100 \ W$ bulb emits light of wavelength '$x$' $\mathring{A}$. What is the value of $x$, if the number of photons emitted is $2.0 \times 10^{20} \ s^{-1}$? $(h = 6.63 \times 10^{-34} \ J \cdot s, c = 3 \times 10^8 \ m \cdot s^{-1})$

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