Class 11ChemistryStructure of AtomDiscovery and Properties of anode, cathode rays neutron and Nuclear structure
EasyWhat are cathode rays?
- AStreams of positively charged particles.
- BStreams of negatively charged particles (electrons) emitted from the cathode in a discharge tube.
- CElectromagnetic radiation emitted by the anode.
- DNeutral particles moving at high speed.
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Who discovered the neutron?
Proton is
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View SolutionThe radius of an atom is about
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View Solution$A$ particle having the same charge and $200$ times greater mass than that of an electron is:
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View SolutionThe nucleus of an atom can be assumed to be spherical. The radius of the nucleus of mass number $A$ is given by $1.25 \times 10^{-13} \times A^{1/3} \ cm$. The radius of the atom is $1 \ \mathring{A}$. If the mass number is $64$,then the fraction of the atomic volume that is occupied by the nucleus is:
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