The nuclear model of an atom was first proposed by
Thomson
Rutherford
Bohr
none of these
1Ao= _____________.
10-2cm
10-6cm
10-8cm
10-3cm
Ionisation energy depends on nuclear charge, charge on the ion and ___________.
shape of the orbitals
spin of the electron
size of the atom
The electronic configuration of the species 'x' is 1s22s22p63s23p64s23d9, what is the atomic number of 'x'?
25
27
29
31
In a stationary orbit of an atom the electron will be
revolving with constant energy
at rest
losing energy constantly
losing energy discontinuously
Total number of orbitals present in the 'O' stationary state?
1
4
16
In Rutherford's alpha - ray scattering experiment, the alpha particles are detected using a screen coated with
Carbon black
Platinum black
Zinc sulphide
Polytetrafluoroethylene
f- orbital present in ____________.
K-shell
L- shell
M- shell
N - shell
The subshells present in 'L' shell are __________ .
s and p
s and d
s and n
s and l
An electron spinning in clock wise direction is represented as ____________.
→
←
↑
↓
