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
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
None of these
The stability of a molecule or an ion can be determined from the :
Bond order
Orbital
Both a and b
The bond order of H2 molecule can be calculated as :
2
4
1
1/2
Dual nature of an electron was explained by :
Bohr
de-Broglie
Pauli
Heisenberg
Which of the following transitions have minimum wavelength ?
n4 → n1
n2 → n1
n4 → n2
n3 → n1
In water molecule, the electronegative oxygen atom forms two polar covalent bonds with ________ atoms.
C
H
S
N
Shape of s-orbital is :
Dumb-bell
Spherical
Hexagonal
Tetrahedral
The relation between wave motion of photons and stream of particle is :
Interference
E = mc2
Diffraction
E = hν
