1.
Principal quantum number determines
2.
The nodal plane concept is applicable to
3.
Photoelectric effect proves ___
4.
A neutron was discovered by ___
5.
Which describes wave nature of electron?
6.
Bohr model is valid for
7.
The charge/mass ratio of electron was measured by
8.
The number of radial nodes in 4p orbital is ___
9.
Which has maximum effective nuclear charge?
10.
The energy of a photon is proportional to
11.
The angular momentum of an electron in Bohr’s second orbit is proportional to ___
12.
The ratio of de Broglie wavelengths of electrons in n=1 and n=3 orbits of H-atom is:
13.
Which transition emits visible light?
14.
If an electron is in 3d orbital, the number of angular nodes =
15.
Which has the highest penetration?
16.
The number of allowed m values for d-orbital is
17.
The uncertainty principle is significant for ___
18.
Electron affinity increases ___
19.
Which has the maximum number of orbitals?
20.
Wave number is proportional to
21.
The orbital with highest penetration
22.
The correct set of quantum numbers for the last electron of Cl (Z=17) is
23.
Which orbital has spherical symmetry?
24.
The number of radial nodes in 3s =
25.
Energy of an electron varies inversely with ___ in Bohr’s model
26.
If n=4, the number of possible electrons =
27.
Which is diamagnetic?
28.
The radius of second Bohr orbit of hydrogen (r₂) is
29.
In hydrogen, the wavelength of H-α is
30.
Which quantum number determines shape of orbital?
31.
Aufbau principle fails for
32.
Which spectral line corresponds to the greatest energy difference?
34.
The first line of Lyman series corresponds to transition
35.
Which subshell has highest energy?
36.
The orbital degeneracy of f-subshell =
37.
Rutherford model fails because it cannot explain ___
38.
Which has the smallest wavelength?
39.
The maximum electrons in n=4 shell =
40.
Hund’s rule deals with
41.
Magnetic quantum number determines ___
42.
Ionisation energy is lowest for
43.
Ionisation enthalpy of He is high due to
44.
Which emits IR radiation?
45.
The ratio of velocities of electrons in n=1 and n=4 hydrogen orbits is
