Bohr’s model is
Successful in calculating energy of the helium atoms
Successful in calculating energy of hydrogen like atoms
Successful in calculating energy of lithium like atoms
None of the above
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
32
Principle, azimuthal and magnetic quantum numbers are respectively related to
Size, orientation and shape
Size, shape and orientation
Shape, size and orientation
The essential constituent of matter is
Electron
Proton
Neutron
None
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
The number of nodal planes that 5d orbital has
Zero
5
Two
Three
Splitting of spectral lines under the influence of magnetic field is
Zeemen effect
Stack effect
Photo electric effect
Raman effect
When the azimuthal quantum number l=1, shape of the orbital will be
Spherical
Dum-bell
Double dumb-bell
Circular
Bohr atomic model can explain
The spectrum of hydrogen atom only
Spectrum of atom or ion containing one electron only
The spectrum of hydrogen molecule
The solar spectrum
Magnetic quantum number specifies
Orbital size
Orbital shape
Orbital orientation
Nuclear stability
