O2 molecule consists of two oxygen atoms. In the molecule, nuclear force between the nuclei of the two atoms:
1. | is not important because nuclear forces are short-ranged |
2. | is as important as electrostatic force for binding the two atoms |
3. | cancels the repulsive electrostatic force between the nuclei |
4. | is not important because oxygen nucleus have equal number of neutrons and protons |
An ionised \(H\)-molecule consists of an electron and two protons. The protons are separated by a small distance of the order of angstrom. In the ground state:
(a) | the electron would not move in circular orbits. |
(b) | the energy would be \(2^{4}\) times that of a \(H\)-atom. |
(c) | the electron's orbit would go around the protons. |
(d) | the molecule will soon decay in a proton and a \(H\)-atom. |
1. (a), (b)
2. (a), (c)
3. (b), (c), (d)
4. (c), (d)