Consider the following sets of quantum numbers:

	n	I	m	s
(i)	3	0	0	+1/2
(ii)	2	2	1	+1/2
(iii)	4	3	-2	-1/2
(iv)	1	0	-1	-1/2
(v)	3	2	3	+1/2

Which of the following sets of quantum numbers is not possible?

1. ii, iii, and iv
2. i, ii, iii, and iv
3. ii, iv and v
4. i and iii

Maximum number of electrons in a subshell with l = 3 and n = 4 is:

1. 14

2. 16

3. 10

4. 12

Two electrons occupying the same orbital are distinguished by:

1. Magnetic quantum number
2. Azimuthal quantum number
3. Spin quantum number
4. Principal quantum number

The energy of an electron in the first Bohr orbit of the hydrogen atom is –13.6 eV. The possible energy value of the excited state(s) for electrons in Bohr orbits of hydrogen is:

1. –3.4 eV 

2. –4.2 eV

3. –6.8 eV 

4. +6.8 eV

The maximum number of electrons that can be accommodated in the subshell with azimuthal quantum number l = 4, is:

1. 10

2. 8

3. 16

4. 18

What is the work function of a metal if the threshold wavelength for the ejection of an electron is 330 nm?

1. 1.2 × 10^–18 J

2. 1.2 × 10^–20 J

3. 6 × 10^–19 J

4. 6 × 10^–12 J

An atom has a mass number of 13 and contains 7 neutrons. Determine its atomic number:

1. 6

2. 7

3. 4

4. 5

Two radiations have wavelengths  \(8000\) Å and  \(16000\) Å, with corresponding energies \(E_1\)​ and \(E_2\)​, respectively. Establish the relationship between \(E_1\)​ and \(E_2\)​.

1. \(E_1=6E_2\)
2. \(E_1=2E_2\)
3. \(E_1=4E_2\)
4. \(E_1=1 / 2 E_2\)

Consider the following sets of quantum numbers :

Which of the following sets of quantum number is not possible?

1. (i), (ii), (iii) and (iv) 

2. (ii), (iv) and (v)

3. (i) and (iii) 

4. (ii), (iii) and (iv)

If uncertainty in position and momentum are equal, then the minimum uncertainty in velocity will be: