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Alpha particle scattering experiment results in the discovery of;
- neutron
- proton
- alpha particle
- nucleus
- N/A
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Answer: D Explanation: -
Who gave the concept of nuclear atom
- Neil Bohr
- Rutherford
- Max Planck
- J.J Thomson
- Since nucleus was discovered by Rutherford in 1909
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Answer: B Explanation: -
The thickness of Rutherford's gold foil was;
- 0.0004 cm
- 0.004 mm
- 0.00004 cm
- 0.0004 m
- N/A
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Answer: C Explanation: -
Almost all the mass of an atom is concentrated in;
- shells
- nucleus
- orbits
- all of these
- N/A
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Answer: B Explanation: -
In Rutherford's atomic model, most of the alpha particles passed straight through the gold foil because;
- alpha particles are heavier
- most of the space in an atom is empty
- alpha particles travel in a straight line
- alpha particles are positively charges
- N/A
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Answer: B Explanation: -
The scattering of alpha particles in Rutherford's atomic model showed that;
- alpha particles are positively charges
- nucelus is positively charged
- alpha particles are heavier particles
- nucleus is located at the centre of an atom
- N/A
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Answer: B Explanation: -
Rutherford's atomic model fails because;
- atom did not have a nucleus and electrons
- it did not account for the attraction between protons and neutrons
- it did not account for the stability of the atom
- there is actually no space between the nucleus and electrons
- N/A
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Answer: C Explanation: -
Rutherford's atomic model did not acount for the stability of an atom because;
- eletrons orbiting around the nucleus radiate energy continuously
- energy of the electron decreases and it will go into spiral motion
- electrons gradually collapse into the nucleus
- all of these
- N/A
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Answer: D Explanation: -
Rutherford's atomic model is similar to;
- Plum pudding model
- planetary system
- electrostatic system
- all of these
- N/A
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Answer: B Explanation: -
According to Rutherford's atomic model atoms must show;
- continuous spectrum
- line spectrum
- atomic emission spectrum
- all of these
- Since eletrons orbiting around the nucleus radiate energy continuously
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Answer: A Explanation: