Questions in nuclei

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	The atoms of same element having different masses but same chemical properties, are called
	If the mass number of an atom is $A = 40$ and its electron configuration is $1{s^2},\;2{s^2},\;2{p^6},\;3{s^2},\;3{p^6}$, the number of neutrons and protons in its nucleus will be
	Which of the following is most unstable
	In the reaction $_1^2H + _1^3H \to _2^4He + _0^1n$. If the tending energies of $_1^2H,{\rm{ }}_1^3H{\rm{ and }}_2^4He$ are respectively $a,{\rm{ b and }}c$ (in MeV), then the energy (in MeV) released in this reaction is
	The nuclei of which one of the following pairs of nuclei are isotones
	Fission of nuclei is possible because the binding energy per nucleon in them
	In any fission process the ratio $\frac{{{\rm{mass of fission products}}}}{{{\rm{mass of parent nucleus}}}}$ is
	If radius of the $_{13}^{27}Al$ nucleus is estimated to be 3.6 Fermi then the radius of $_{52}^{125}Te$nucleus be nearly
	The example of nuclear fusion is
	Radioactive substance do not emit