The electrons identified by quantum number n and 1
(i)n=4,l=1 (ii) n=4,l=0 (iii)n=3,l=2(iv)n=3,l=1 can be placed in the order of
iv<ii<iii<i
iii<iv<i<ii
i<ii<iii<iv
iv<iii<ii<i
The essential constituent of matter is
Electron
Proton
Neutron
None
In a given atom no two electrons can have the same values for all the four quantum numbers. This is called.
Hund’s rule
Aufbau principle
Uncertainty principle
Paul’s exclusion principle
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
When the azimuthal quantum number l=1, shape of the orbital will be
Spherical
Dum-bell
Double dumb-bell
Circular
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
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.
Which among the following species have the same number of electrons in its outermost as well as penultimate shall
Mg2+
O2-
F-
Ca2+
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.
Which of the following is correct for number of electrons, number of orbitals and type of orbitals respectively in N-orbit?
4, 4 and 8
4, 8 and 16
32, 16 and 4
4, 16 and of 32
