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