Choose the correct option

Options

A. Atomic mass unit `(u)` is `1//12` of the mass of a neutral carbon atom `._(6)C^(12)` in its lowest enegry state `1amu = 931MeV`
B. `Z:` Atomic number (number of protons)
`N:` Number of neutrons
`A:` mass number `(A=Z+N)`
C. Isotopes: nuclei having same number of protons but differenct number of neutrons
Isobars: nuclei with same number of `A`
Isotones: nuclei with same number of neutrons but different are correct
D. All options are correct

Answer

D