(C) The correct answer is $(C)$. In the Rutherford $\alpha$-particle scattering experiment,it was observed that most of the $\alpha$-particles passed

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Most part of the atom is empty space

(C) The correct answer is $(C)$. In the Rutherford $\alpha$-particle scattering experiment,it was observed that most of the $\alpha$-particles passed through the gold foil without any deflection. This indicates that the majority of the space within an atom is empty.

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

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When $\alpha$-particles are sent through a thin metal foil,most of them go straight through the foil because (one or more are correct)

IIT 1984 All IIT

A
Alpha particles are much heavier than electrons
B
Alpha particles are positively charged
C
Most part of the atom is empty space
D
Alpha particles move with high velocity

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Structure of Atom

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Atomic models and Planck's quantum theory

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IIT 1984 Paper All IIT years →

In Rutherford's experiment,generally the thin foil of heavy atoms,like gold,platinum etc. have been used to be bombarded by the $\alpha$-particles. If the thin foil of light atoms like Aluminium etc. is used,what difference would be observed from the above results?

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Two electrons are revolving around a nucleus at distances $r$ and $4r$. The ratio of their time periods is

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The energy of the orbit of hydrogen is $E_n = \frac{1.31 \times 10^6}{n^2} \ J \ mol^{-1}$. If an electron transits from $n = 3$ to $n = 2$,find the frequency of the emitted radiation. (Note: $h = 6.6 \times 10^{-34} \ J \ s$,$N_A = 6.02 \times 10^{23} \ mol^{-1}$)

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The angular momentum of an electron in the $7^{th}$ Bohr orbit of a hydrogen atom is given by:

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Explain the Balmer series and provide its equation.

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When $\alpha$-particles are sent through a thin metal foil,most of them go straight through the foil because (one or more are correct)

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In Rutherford's experiment,generally the thin foil of heavy atoms,like gold,platinum etc. have been used to be bombarded by the $\alpha$-particles. If the thin foil of light atoms like Aluminium etc. is used,what difference would be observed from the above results?

Two electrons are revolving around a nucleus at distances $r$ and $4r$. The ratio of their time periods is

The energy of the orbit of hydrogen is $E_n = \frac{1.31 \times 10^6}{n^2} \ J \ mol^{-1}$. If an electron transits from $n = 3$ to $n = 2$,find the frequency of the emitted radiation. (Note: $h = 6.6 \times 10^{-34} \ J \ s$,$N_A = 6.02 \times 10^{23} \ mol^{-1}$)

The angular momentum of an electron in the $7^{th}$ Bohr orbit of a hydrogen atom is given by:

Explain the Balmer series and provide its equation.

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