9
MCQ (Single Correct Answer)
Number of angular nodes for 4d orbital is ........... .
A
4
B
3
C
2
D
1
10
MCQ (Single Correct Answer)
Which of the following is responsible to rule out the existence of definite paths or trajectories of electrons?
A
Pauli's exclusion principle
B
Heisenberg's uncertainty principle
C
Hund's rule of maximum multiplicity
D
Aufbau principle
11
MCQ (Single Correct Answer)
Total number of orbitals associated with third shell will be ........... .
A
2
B
4
C
9
D
3
12
MCQ (Single Correct Answer)
Orbital angular momentum depends on ............. .
A
$l$
B
$n$ and $l$
C
$n$ and $m$
D
$m$ and $s$
13
MCQ (Single Correct Answer)
Chlorine exists in two isotopic forms. $\mathrm{Cl}-37$ and $\mathrm{Cl}-35$ but its atomic mass is 35.5. This indicates the ratio of $\mathrm{Cl}-37$ and $\mathrm{Cl}-35$ is approximately
A
$1: 2$
B
$1: 1$
C
$1: 3$
D
$3: 1$