Structure of At...

Which one of the following sets of quantum number represent an impossible arrangement ?

The orbital diagram in which Aufbau principle is violated is

The electrons, identified by quantum number n and (i) n = 4, l = 1 (ii) n = 4, l = 0 (iii) n = 3, l = 2 (iv) n = 3, l = 1 can be placed in order of increasing energy, from the lowest to highest, as

The wave length associated with a golf ball weighing 200 g and moving at a speed of 5 m/h is of the order

If the nitrogen atom had electronic configuration 1s⁷, it would have energy lower than that of the normal ground state configuration 1s², 2s², 2p³ because the electrons would be closer to the nucleus. Yet, 1s⁷ is not observed because it violates.

Radial nodes present in 3s and 2p – orbitals are respectively

Calculate the energy in joule corresponding to light of wavelength 45 nm : (Planck’s constant h = 6.63 × 10^–34 Js; speed of light c = 3 × 10⁸ ms^–1)

Which of the following are iso-electronic ?

An elements