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Q. No.Which scenario leads to the maximum exchange of energy?
1. \(d^1\)
2. \(d^3\)
3. \(d^5\)
4. \(d^4\)
Subtopic: Pauli's Exclusion Principle & Hund's Rule | AUFBAU Principle |
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The de-Broglie wavelength of a moving object having a mass 10 g and a velocity of 500 ms-1 will be:
1. 6.63 × 10-34 m
2. 3.18 × 10-36 m
3. 1.32 × 10-34 m
4. 2.46 × 10-32 m
1. 6.63 × 10-34 m
2. 3.18 × 10-36 m
3. 1.32 × 10-34 m
4. 2.46 × 10-32 m
Subtopic: De Broglie Equation |
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Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I (quantum number) |
List-II (Orbital) |
||
| (A) | n = 2, \(\ell\) = 1 | (I) | 2s |
| (B) | n = 3, \(\ell\) = 2 | (II) | 3s |
| (C) | n = 3, \(\ell\) = 0 | (III) | 2p |
| (D) | n = 2, \(\ell\) = 0 | (IV) | 3d |
| (A) | (B) | (C) | (D) | |
| 1. | (III) | (IV) | (I) | (II) |
| 2. | (IV) | (III) | (I) | (II) |
| 3. | (IV) | (III) | (II) | (I) |
| 4. | (III) | (IV) | (II) | (I) |
Subtopic: Shell & Subshell |
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NEET - 2022
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The radius (in Å) of the 3rd Bohr orbit in Li2+ ion is closest to:
[Given: Atomic number of Li = 3]
1. 0.520
2. 1.018
3. 1.587
4. 1.881
[Given: Atomic number of Li = 3]
1. 0.520
2. 1.018
3. 1.587
4. 1.881
Subtopic: Bohr's Theory |
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The radius of the second orbit of the \(\text{Li}^{2+}\) ion is x. What will be the radius of the third orbit of the \(\text{Be}^{3+}\) ion?
| 1. | \(\dfrac{27 x}{16}\) | 2. | \(\dfrac{16 x}{27}\) |
| 3. | \(\dfrac{4 x}{3}\) | 4. | \(\dfrac{3 x}{4}\) |
Subtopic: Hydrogen Spectra |
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Level 2: 60%+
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Consider the following combination of n, l, and m values.
(i) n=3; l=0; m=0
(ii) n=4; l=0; m=0
(iii) n=3; l=1; m=0
(iv) n=3; l=2; m=0
The correct order of energy of the corresponding orbitals for multielectron species:
1. (ii) > (i)> (iv)> (iii)
2. (iv) > (ii) > (iii) > (i)
3. (i) > (iii) > (iv) > (ii)
4. (iv) > (iii) > (i) > (ii)
(i) n=3; l=0; m=0
(ii) n=4; l=0; m=0
(iii) n=3; l=1; m=0
(iv) n=3; l=2; m=0
The correct order of energy of the corresponding orbitals for multielectron species:
1. (ii) > (i)> (iv)> (iii)
2. (iv) > (ii) > (iii) > (i)
3. (i) > (iii) > (iv) > (ii)
4. (iv) > (iii) > (i) > (ii)
Subtopic: Shell & Subshell |
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Subtopic: Quantum Numbers & Schrodinger Wave Equation |
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Which of the following sets of quantum numbers are not possible?
| 1. | \(n=1,l=0,m_l=0,m_s=-\frac12 \) |
| 2. | \(n=1,l=1,m_l=0,m_s=+\frac12 \) |
| 3. | \(n=2,l=1,m_l=0,m_s=+\frac12 \) |
| 4. | \(n=3,l=1,m_l=0,m_s=+\frac12 \) |
Subtopic: Quantum Numbers & Schrodinger Wave Equation |
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The threshold frequency of a metal is \(1.4 \times 10^{15}sec^{-1}\). Calculate the minimum energy required to eject a photoelectron from this metal.
[Given: Planck’s constant, \(h = 6.6 \times 10^{-34} J sec\)]
2. \(9.24 \times 10^{-18}J \)
3. \(4.62 \times 10^{-19}J \)
4. \(4.62 \times 10^{-18}J \)
Subtopic: Photo Electric Effect |
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The correct relation between the radius of 3rd and 4th Bohr orbit for H-atom is:
1. \(\frac{r_3}{r_4}=\frac{16}{9} \)
2. \(\frac{r_3}{r_4}=\frac{9}{16} \)
3. \(\frac{r_3}{r_4}=\frac{9}{4} \)
4. \(\frac{r_3}{r_4}=\frac{3}{16} \)
1. \(\frac{r_3}{r_4}=\frac{16}{9} \)
2. \(\frac{r_3}{r_4}=\frac{9}{16} \)
3. \(\frac{r_3}{r_4}=\frac{9}{4} \)
4. \(\frac{r_3}{r_4}=\frac{3}{16} \)
Subtopic: Hydrogen Spectra |
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