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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The group number and electronic configuration of  element Z =114 is: 

1. Halogen family, [Rn]5f146d107s27p5

2. Carbon family, [Rn]5f146d107s27p2

3. Oxygen family, [Rn]5f146d107s27p4

4. Nitrogen family, [Rn]5f146d107s27p6

Subtopic:  AUFBAU Principle |
 76%
From NCERT
NEET - 2017
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The element Z = 114 has been discovered recently. Family/group and electronic configuration from which it  will belong are:
1. Carbon family and  [Rn] 5f14 6d10 7s7p2
2. Oxygen family and [Rn] 5f14 6d10 7s2 7p4
3. Nitrogen family and [Rn] 5f14 6d10 7s2 7p6
4. Halogen family and [Rn] 5f14 6d10 7s2 7p5

Subtopic:  AUFBAU Principle |
 78%
From NCERT
NEET - 2017
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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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The number of electrons that can be fit into the orbital for which n = 3 and l = 1, is 

1. 2

2. 6

3. 10

4. 14

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
From NCERT
NEET - 2016
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Which of the following pairs of d-orbitals will have electron density along the axes?

1. dz2,dxz

2. dxz,dyz

3. dz2,dx2-y2

4. dxy,dx2-y2

Subtopic:  Shell & Subshell |
 77%
From NCERT
NEET - 2016
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The electronic configurations of Eu (Atomic no. 63), Gd (Atomic no. 64) and Tb (Tb Atomic no. 65) are

1. [Xe]4f65d16s2, [Xe]4f75d16s2 and [Xe]4f96s2

2. [Xe]4f65d16s2, [Xe]4f75d16s2 and [Xe]4f85d16s2

3. [Xe]4f76s2, [Xe]4f75d16s2 and [Xe]4f96s2

4. [Xe]4f76s2, [Xe]4f86s2 and [Xe]4f85d16s2 

Subtopic:  AUFBAU Principle |
 57%
From NCERT
NEET - 2016
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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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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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Links
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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 |
 84%
From NCERT
NEET - 2016
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