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1.
The number of beta particles emitted by a radioactive substance is twice the number of alpha particles emitted by it. The resulting daughter is an
2.
The half life of a radioactive susbtance is 30 days. What is the time taken to disintegrate to 3/4th of its original mass?
3.
The radius of a spherical nucleus as measured by electron scattering is 3.6 fm. What is the mass number of the nucleus most likely to be?
4.
The mass number of iron nucleus is 56 the nuclear density is
5.
Order of magnitude of density of uranium nucleus is
6.
The set which represent the isotope, isobar, and isotone respectively is
7.
A radioactive nucleus emits a beta particle. The parent and daughter nuclei are
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10.
Ratio of the radii of the nuclei with mass numbers 8 and 27 would be