Which of the following contradicts with bohr concept of orbit in an atom ?
Pauli's exclusion Principle
Hund's rule
(n + l) rule
Uncertainty principle
The total number of electrons present in all the s-orbitals, all the p-orbitals and all the d-orbitals of Rb+ ion are respectively
9, 18, 10
8, 10 18
8, 18, 10
8, 26, 10
What is the number of electrons in an atom which have n = 4, l = 2, m = -1 ?
10
5
2
1
The magnetic quantum number for the last electron in sodium atom is equal to
3
0
The observation that the ground state of nitrogen atom has 3 unpaired electrons in its electronic configuration is associated with
Heisenberg's uncertainty principle
Pauli's exclusion principle
Aufbau principle
Hund's rule of maximum multiplicity
The wave length of a spectral line for an electronic transition is inversely related to
The nuclear charge of the atom
The difference in the energy of the energy levels involved in the transition
The number of electrons undergoing the transition
The velocity of the electron undergoing the transition
The maximum number of electrons which can be accommodated in a 'g' subshell is
14
18
32
8
What is the Bohr radius associated with hydrogen atom ?
0.529 × 10-10 cm
5.29 × 10-10m
0.529 ×10-10m
None of these
What is the time taken for an electron to complete an revolution in the Bohr orbit of hydrogen atom ?
4π2mr2/nh
h/2πmr
nh.4π2mr
2πmr/n2h2
The fundamental particle which is responsible for keeping the nucleons together is
Electron
Proton
Positron
Meson
