Find the binding energy of deuteron in MeV. Given that `m_p = 1.00728` u
`m_n = `1.00865 u and
m_D = 2.01412 mu`.

Calculate the binding energy of alpha - particle. Given m_p = 1.007825 amuo, m_n 1.008665 amu, m(_2^4He) = 4.002800 amu].

Calculate binding energy per nucleon of _20^40Ca nucleus (m_p = 1.007825 amu , m_n = 1.008665 amu, 'm (_20^40Ca) = 39.962589 amu