Questions in nuclei

Select	Question
	The binding energies per nucleon for a deuteron and an $\alpha - $particle are x1 and x2 respectively. What will be the energy Q released in the reaction $_1{H^2}{ + _1}{H^2}{ \to _2}H{e^4} + Q$
	The mass number of a nucleus is equal to the number of
	The rest energy of an electron is
	In $_{88}R{a^{226}}$nucleus, there are
	Outside a nucleus
	Order of magnitude of density of uranium nucleus is $({m_p} = 1.67 \times {10^{ - 27}}kg)$
	Radius of $_2^4He$nucleus is 3 Fermi. The radius of $3 \to 2$nucleus will be
	Nucleus of an atom whose atomic mass is 24 consists of
	Atomic weight of boron is 10.81 and it has two isotopes $_5{B^{10}}$and $_5{B^{11}}$. Then ratio of $_5{B^{10}}{:_5}{B^{11}}$in nature would be
	The mass of a neutron is the same as that of