Consider the following statements :
A. Atoms of each element emit characteristics spectrum.
B. According to Bohr's Postulate, an electron in a hydrogen atom, revolves in a certain stationary orbit.
C. The density of nuclear matter depends on the size of the nucleus.
D. A free neutron is stable but a free proton decay is possible.
E. Radioactivity is an indication of the instability of nuclei.
Choose the correct answer from the options given below :
Solution
(A) True, atom of each element emits characteristic spectrum.<br><br>(B) True, according to Bohr's postulates $mvr = {{nh} \over {2\pi }}$ and hence electron resides into orbits of specific radius called stationary orbits.<br><br>(C) False, density of nucleus is constant.<br><br>(D) False, A free neutron is unstable decays into proton and electron and antineutrino.<br><br>(E) True, unstable nucleus show radioactivity.
About this question
Subject: Physics · Chapter: Atoms and Nuclei · Topic: Bohr's Model of Hydrogen Atom
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