Recent questions and answers in Atoms and Nuclei

The energy equivalent of 0.5 g of a substance is : (1) 0.5 × 1013 J (2) 4.5 × 1016 J (3) 4.5 × 1013 J (4) 1.5 × 1013 J

For which one of the following, Bohr model is not valid : (1) Singly ionised neon atom (Ne​​​​​+) (2) Hydrogen atom (3) Singly ionised helium atom (He+) (4) Deuteron atom

α-particle consists of : (1) 2 protons and 2 neutrons only (2) 2 electrons, 2 protons and 2 neutrons (3) 2 electrons and 4 protons only (4) 2 protons only