Correct electronic configuration of Ni+2 ion among the following is:
1. 4s03d8
2. 4s23d6
3. 4s23d10
4. 4s13d5
Subtopic: AUFBAU Principle |
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Subtopic: Shell & Subshell |
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The number of angular nodes and radial nodes present in 3p orbital is respectively-
1. 2,3
2. 1,1
3. 1, 2
4. 2,1
1. 2,3
2. 1,1
3. 1, 2
4. 2,1
Subtopic: Nodal Plane |
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Subtopic: Shell & Subshell |
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The particle among the following does not show deflection from the path on passing through an electric field is -
1. Proton
2. Cathode rays
3 . Electron
4. Neutron
1. Proton
2. Cathode rays
3 . Electron
4. Neutron
Subtopic: Introduction of Atomic Structure |
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The atomic number of the atom having atomic mass number 13 has 7 neutrons is:
1. 13
2. 7
3. 6
4. 8
1. 13
2. 7
3. 6
4. 8
Subtopic: Number of Electron, Proton & Neutron |
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Correct distribution of electrons in oxygen atom using orbital diagram among the following is -
1.
2.
3.
4.
1.
2.
3.
4.
Subtopic: Pauli's Exclusion Principle & Hund's Rule |
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Correct sequence of the increasing order of effective nuclear charge (Zeff) of s, p and d sub-shells is -
1. d = p < s
2. d < p < s
3. d > p < s
4.d < p > s
1. d = p < s
2. d < p < s
3. d > p < s
4.d < p > s
Subtopic: Shell & Subshell |
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Calculate the wavelength emitted during the transition of electron in between two levels of Li2+ ion whose sum is 4 and difference is 2 ?
1. 3.14 x 10-6 cm
2. 1.14 x 10-5 cm
3. 3.14 x 10-6 m
4. 1.14 x 10-6 cm
Subtopic: Hydrogen Spectra |
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Level 3: 35%-60%
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Given below are two statements:
| Assertion (A): | The wavelength of the Kα characteristic X-ray of an unknown element is \(2.289×10^{−8} cm\), and its atomic number is 26. |
| Reason (R): | According to Moseley's law, the frequency of a characteristic X-ray is directly proportional to the square of the atomic number of the element. |
| 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. | (A) is False, but (R) is True. |
Subtopic: Quantum Numbers & Schrodinger Wave Equation |
Level 4: Below 35%
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