Year: 2017
Topic: Structure of Atom
Time :
1.
Which one is the wrong statement ?
(1). The energy of 2s orbital is less than the energy of 2p orbital in case of Hydrogen like atoms.
(2). de-Broglie's wavelength is given by \(\lambda\,=\,\frac{\text{h}}{\text{mv}}\)
where m = mass of the particle, v = group velocity of the particle.
(3). The uncertainty principle is \(\Delta \text{E} \times \Delta \text{t}\) ≥ \(\frac{\text{h}}{\text{4} \pi\)
(4). Half-filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.