Orbital having 3 angular nodes and 3 total nodes is:

1. 5 p 2. 3 d
3. 4 f 4. 6 d

Subtopic:  Nodal Plane |
 79%
Level 2: 60%+
NEET - 2019
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Consider the given two statements:
Assertion (A): All d orbitals are tetra-lobed structures having two nodal planes.
Reason (R): Out of five, only four d-orbitals are degenerate orbitals.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Shell & Subshell |
 56%
Level 3: 35%-60%
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The incorrect set of quantum numbers among the following is:

1. n= 4, l= 0, m= 0, s= -1/2
2. n= 5, l= 3, m= 0, s= +1/2
3. n= 3, l= 2, m= -3, s= -1/2
4. n= 3, l= 2, m= 2, s= -1/2

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 87%
Level 1: 80%+
AIPMT - 2009
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The energies E1 and E2 of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e., λ1 and λ2 will be:

1.  λ1=2λ2

2.  λ1=4λ2

3.  λ1=12λ2

4.  λ1=λ2

Subtopic:  Bohr's Theory |
 86%
Level 1: 80%+
AIPMT - 2011
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The correct set of four quantum numbers for the valence electron of a rubidium atom (Z =37) is: 

1. \(5,1,1,+ {1 \over2}\) 2. \(6,0,0,+ {1 \over2}\)
3. \(5,0,0,+ {1 \over2}\) 4. \(5,1,0,+ {1 \over2}\)
Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 80%
Level 1: 80%+
AIPMT - 2012
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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%
Level 2: 60%+
AIPMT - 2013
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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 nanometers 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%
Level 1: 80%+
AIPMT - 2013
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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 |
 80%
Level 1: 80%+
NEET - 2018
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Incorrect statement among the following is: 

1. The uncertainty principle is\(\Delta x \cdot \Delta p \geq \dfrac{h}{4 \pi} \)
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\(\lambda=\dfrac{h}{m v} \), where m= mass of the particle, v = group velocity of the particle.
Subtopic:  De Broglie Equation |
 70%
Level 2: 60%+
NEET - 2017
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The number of protons, neutrons and electrons in  \( _{71}^{175}Lu\) respectively, are:

1. 104, 71 and 71

2. 71, 71 and 104

3. 175, 104 and 71

4. 71, 104 and 71

Subtopic:  Introduction of Atomic Structure | Number of Electron, Proton & Neutron |
 82%
Level 1: 80%+
NEET - 2020
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