How many electrons can fit in the subshell for which n = 3 and l = 1?
1. 2
2. 6
3. 10
4. 14

Subtopic:  AUFBAU Principle |
 73%
From NCERT
NEET - 2016
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Incorrect statement among the following is: 

1. The uncertainty principle is\(\Delta x \cdot \Delta p \geq \frac{h}{4 \pi} \)
2. Half-filled and fully filled orbitals have greater stability due to greater exchange energy,
greater symmetry, and a more balanced arrangement.
3. The energy of the 2s orbital is less than the energy of the 2p orbital in the case of hydrogen-like atoms.
4. De-Broglie's wavelength is given by\(\lambda=\frac{h}{m v} \), where m= mass of the particle, v = group velocity of the particle.

Subtopic:  De Broglie Equation |
 67%
From NCERT
NEET - 2017
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A pair of d-orbitals having electron density along the axes is: 

1. dz2, dxz

2. dxz, dzy

3. dz2, dx2-y2

4. dxy, dx2-y2

Subtopic:  Shell & Subshell |
 83%
From NCERT
NEET - 2016
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The incorrect statement among the following is:

1. Total orbital angular momentum of an electron in 's' orbital is equal to zero.
2. An orbital is designated by three quantum numbers, while an electron in an atom is designated by four quantum numbers.
3. The electronic configuration of N atom is 
4. The value of m for dz2 is zero.
Subtopic:  AUFBAU Principle |
 79%
From NCERT
NEET - 2018
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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

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 85%
From NCERT
NEET - 2016
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Which is the correct order of increasing energy of the listed orbitals in the atom of titanium?
1. 3s 4s 3p 3d
2. 4s 3s 3p 3d
3. 3s 3p 3d 4s
4. 3s 3p 4s 3d

Subtopic:  AUFBAU Principle |
 77%
From NCERT
NEET - 2015
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What is the maximum number of orbitals that can be identified with the following quantum numbers?
n = 3, l = 1, m = 0

1. 1 2. 2
3. 3 4. 4
Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 59%
From NCERT
AIPMT - 2014
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Calculate the energy in corresponding to light of wavelength 45 nm:
(Planck's constant h = 6.63 × 10–34 Js: speed of light c = 3 × 108 ms–1)
1. 6.67 x 1015 J
2. 6.67 x 1011 J
3. 4.42 x 10-15 J
4. 4.42 x 10-18 J

Subtopic:  Planck's Theory |
 78%
From NCERT
AIPMT - 2014
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The value of Planck's constant is 6.63 × 10–34 Js. The speed of light is 3 × 1017 nm s–1. Which value is closest to the wavelength in nanometer of a quantum of light with a frequency of 6 × 1015 s–1?
1. 25
2. 50
3. 75
4. 10
Subtopic:  Electromagnetic Radiation |
 86%
From NCERT
AIPMT - 2013
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What is the maximum number of electrons that can be associated with the following set of quantum numbers? 
n = 3, l = 1 and m = –1.
1. 6
2. 4
3. 2
4. 10

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 77%
From NCERT
AIPMT - 2013
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