An electron has spin quantum number +1/2 and a magnetic quantum number -1. It cannot be present in
p - orbital
s - orbital
d - orbital
f - orbital
The number of nodal planes in 2pz orbital is
Zero
One
Two
Infinity
The first energy shell that can have f - orbitals is
Second
First
Fourth
Third
The frequency ratio between two radiations of wave length 400nm and 700nm in the visible spectrum is
14/8
4/7
8/14
15/8
Wave length of high energy transition of hydrogen atom is 912 Ao. The corresponding wave length for helium atoms is
228nm
45.6nm
22.8nm
456 Ao
The orbital with zero electron density in the xy plane is
pz
dz2
dxy
dx2 - y2
The correct set of quantum numbers for the unpaired electron of chlorine atom is
n = 3, l = 1, ml = 1
n = 2, l = 1, ml = 1
n = 2, l = 1, ml = 0
n = 3, l = 2, ml = 1
The number of electrons in K19 which have n = 3 and l = 1 is
6
8
2
1
The maximum number of electrons in a subshell having the same value of spin quantum number is given by
l (l + 1)
√l(l + 1)
l + 2
2l + 1
Two electrons in the same atomic orbital can be distinguished by their
Principle quantum number
Azimuthal quantum number
Magnetic quantum number
Spin quantum number
