$A$ nuclear reaction must be balanced in terms of

The nucleus $^{64}_{29}Cu$ accepts an orbital electron to yield:

$_{92}U^{238}$ emits $8$ $\alpha$-particles and $6$ $\beta$-particles. The neutron/proton ratio in the product nucleus is

Large energy released in an atomic bomb explosion is mainly due to

The measure of binding energy of a nucleus is the

Let $m_p$ be the mass of a proton,$m_n$ that of a neutron,$M_1$ that of a $_{10}^{20}Ne$ nucleus,and $M_2$ that of a $_{20}^{40}Ca$ nucleus. Then: