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
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
The bond order of N2 molecule can be calculated as :
6
3
Which of the following transitions have minimum wavelength ?
n4 → n1
n2 → n1
n4 → n2
n3 → n1
In a molecule, electrons are present in new orbitals called :
Molecular orbitals
Spherical orbital
Hexagonal orbital
None of these
The stability of a molecule or an ion can be determined from the :
Bond order
Orbital
Both a and b
The charge on an electron was discovered by :
J.J. Thomson
Neil Bohr
James Chadwick
Millikan
Calculate the velocity of an electron having wavelength of 0.15 nm. Mass of an electron is 9.109 x 10-28 g. (h=6.626 x 10-27 ergs)
4.85 x 108 cms-1
2.062 x 10-15 cms-1
2.068 x 10-10 cms-1
4.85 x 10-8 cms-1
The relation between wave motion of photons and stream of particle is :
Interference
E = mc2
Diffraction
E = hν