The essential constituent of matter is
Electron
Proton
Neutron
None
The number of nodal planes that 5d orbital has
Zero
5
Two
Three
The total number of atomic orbitals in fourth energy level of an atom is
4
8
16
32
Splitting of spectral lines under the influence of magnetic field is
Zeemen effect
Stack effect
Photo electric effect
Raman effect
The energy of second Bohr orbit of the hydrogen atom is – 328 k J/ mol ; hence the energy of fourth Bohr orbit would be
41 KJ/mol
-1312 KJ/mol
-164 KJ/mol
-82 LK/mol
Principle, azimuthal and magnetic quantum numbers are respectively related to
Size, orientation and shape
Size, shape and orientation
Shape, size and orientation
None of the above
Angular momentum of an electron in the nth orbit of hydrogen atom is given by
nh/2π
nh
2π/nh
π/2nh
The principle quantum number of an atom is related to the,
Size of the shell
Spin angular momentum
Orbital angular momentum
Orientation of the orbital in space.
The maximum energy is possessed by an electron, when it is present
in nucleus
In ground energy state
in first excited state
at infinite distance from the nucleus.
The electronic configuration of a dipositive ion Mn2+ is 2, 8, 14 and its mass number is 56. The number of neutrons present is
34
42
30
