1.
The correct set of quantum numbers for the last electron of Cl (Z=17) is
2.
Ionisation energy is lowest for
3.
The nodal plane concept is applicable to
4.
Which has the highest penetration?
5.
Which quantum number determines shape of orbital?
6.
The energy of a photon is proportional to
7.
Which emits IR radiation?
8.
If n=4, the number of possible electrons =
9.
Electron affinity increases ___
10.
The number of allowed m values for d-orbital is
11.
Rutherford model fails because it cannot explain ___
12.
Energy of an electron varies inversely with ___ in Bohr’s model
13.
Ionisation enthalpy of He is high due to
14.
A neutron was discovered by ___
15.
The first line of Lyman series corresponds to transition
16.
The orbital degeneracy of f-subshell =
17.
The charge/mass ratio of electron was measured by
18.
Which has maximum effective nuclear charge?
19.
The orbital with highest penetration
20.
Which transition emits visible light?
21.
Which describes wave nature of electron?
22.
Which subshell has highest energy?
23.
Bohr model is valid for
24.
The ratio of velocities of electrons in n=1 and n=4 hydrogen orbits is
25.
The uncertainty principle is significant for ___
26.
The maximum electrons in n=4 shell =
27.
Aufbau principle fails for
28.
The angular momentum of an electron in Bohr’s second orbit is proportional to ___
29.
In hydrogen, the wavelength of H-α is
30.
The number of radial nodes in 4p orbital is ___
31.
Hund’s rule deals with
33.
Principal quantum number determines
34.
The number of radial nodes in 3s =
35.
Which orbital has spherical symmetry?
36.
The radius of second Bohr orbit of hydrogen (r₂) is
37.
Photoelectric effect proves ___
38.
Wave number is proportional to
39.
Which has the smallest wavelength?
40.
Which is diamagnetic?
41.
Which spectral line corresponds to the greatest energy difference?
42.
Which has the maximum number of orbitals?
43.
If an electron is in 3d orbital, the number of angular nodes =
44.
The ratio of de Broglie wavelengths of electrons in n=1 and n=3 orbits of H-atom is:
45.
Magnetic quantum number determines ___
