de-Broglie relation has significance for ___________ object.
Submicroscopic
Macro
Large
None of these
Shape of s-orbital is :
Dumb-bell
Spherical
Hexagonal
Tetrahedral
Which of the following transitions have minimum wavelength ?
n4 → n1
n2 → n1
n4 → n2
n3 → n1
A particle having a mass of 1.0 mg has a velocity of 3600 km/h. Calculate the wavelength of the particle.
(h=6.626 x 10-27 ergs)
6.626 x 10-28 cm
6.626 x 10-29 cm
6.626 x 10-30 cm
6.626 x 10-31 cm
Dual nature of an electron was explained by :
Bohr
de-Broglie
Pauli
Heisenberg
It is impossible to determine simultaneously by both the position and velocity of a microscopic particle with absolute accuracy or certainty. This is :
Heisenberg uncertainty principle
de-Broglie's principle
Bohr's principle
Quantum theory
For an electron(or any other material particle) of mass m moving with velocity V, λ= ____________ .
h/mv
h/v2
mv2/c
hc2/m
Which type of bonding is formed between the two molecules of same or different compounds ?
Intra molecular hydrogen bonding
Inter molecular hydrogen bonding
A and B
which of the following particles having same kinetic energy, would have the maximum de-Broglie wave length
α-particles
proton
β-particles
neutron
The bond order of H2 molecule can be calculated as :
2
4
1
1/2
