Probability of finding an electron at the nodal surface is
Unity
Low
High
Zero
Magnetic quantum number specifies
Orbital size
Orbital shape
Orbital orientation
Nuclear stability
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
When the azimuthal quantum number l=1, shape of the orbital will be
Spherical
Dum-bell
Double dumb-bell
Circular
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
The essential constituent of matter is
Electron
Proton
Neutron
None
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.
Angular momentum of an electron in the nth orbit of hydrogen atom is given by
nh/2π
nh
2π/nh
π/2nh
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
