Which pair of ions has the same electronic configuration?
1. | \(Cr^{3+}, Fe^{3+}\) | 2. | \(Fe^{3+}, Mn^{2+}\) |
3. | \(Fe^{3+}, Co^{3+}\) | 4. | \(Sc^{3+}, Cr^{3+}\) |
For the electrons of an oxygen atom. The correct statement among the following is :
1. | Zeff for an electron in a 2s orbital is the same as Zeff for an electron in a 2p orbital. |
2. | An electron in the 2s orbital has the same energy as an electron in the 2p orbital. |
3. | Zeff for an electron in 1s orbital is the same as Zeff for an electron in a 2s orbital |
4. | The two electrons present in the 2s orbital have same spin quantum numbers ms but of opposite sign |
Identify the matter waves with the shortest wavelength when traveling at the same speeds :
1. | Electron | 2. | Alpha particle (He2+) |
3. | Neutron | 4. | Proton |
Match the following species with their corresponding ground state electronic configuration.
Atom/Ion | Electronic configuration | ||
A. | Cu | 1. | |
B. | Cu2+ | 2. | |
C. | Zn2+ | 3. | |
D. | Cr3+ | 4. | |
5. |
A | B | C | D | |
1. | 4 | 2 | 5 | 1 |
2. | 3 | 4 | 1 | 5 |
3. | 3 | 2 | 1 | 4 |
4. | 4 | 2 | 1 | 3 |
Match the quantum numbers with the information provided by them:
Quantum number | Information provided | ||
A. | Principal quantum number | 1. | Orientation of the orbital |
B. | Azimuthal quantum number | 2. | Energy and size of orbital |
C. | Magnetic quantum number | 3. | Spin of electron |
D. | Spin quantum number | 4. | Shape of the orbital |
A | B | C | D | |
1. | 2 | 4 | 1 | 3 |
2. | 1 | 2 | 3 | 4 |
3. | 1 | 4 | 3 | 2 |
4. | 4 | 1 | 3 | 2 |
Match the ensuing rules with the corresponding statements:
Rules | Statements | ||
A. | Hund’s Rule | 1. | No two electrons in an atom can have the same set of four quantum numbers. |
B. | Aufbau Principle | 2. | Half-filled and completely filled orbitals have extra stability. |
C. | Pauli's Exclusion Principle | 3. | Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied. |
D. | Heisenberg’s Uncertainty Principle | 4. | It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously. |
5. | In the ground state of atoms, orbitals are filled in the order of their increasing energies. |
A | B | C | D | |
1. | 3 | 5 | 1 | 2 |
2. | 1 | 2 | 3 | 4 |
3. | 3 | 5 | 1 | 4 |
4. | 4 | 5 | 3 | 2 |
Match types of wave in Column-I with the corresponding frequency in Column-II and mark the appropriate option:
Column-I
(Types of Wave)
|
Column-II (Corresponding Frequency) |
||
A. | X-rays | I. | |
B. | Ultraviolet wave (UV) | II. | |
C. | Long radio waves | III. | |
D. | Microwave | IV. |
A | B | C | D | |
1. | IV | I | III | II |
2. | I | IV | II | III |
3. | I | IV | III | II |
4. | IV | III | I | II |
Match the following.
Column I |
Column II |
||
A. |
Photon |
1. |
Value is 4 for N-shell |
B. |
Electron |
2. |
Probability density |
C. | 3. |
Always positive value |
|
D. |
Principle quantum number n |
4. |
Exhibits both momentum and wavelength |
Options:
A | B | C | D | |
1. | 4 | 4 | 2,3 | 1,3 |
2. | 1 | 2 | 3 | 4 |
3. | 2,1 | 4 | 3 | 2,3 |
4. | 4 | 5 | 3 | 2 |
Match Column-I with Column-II and choose the appropriate option:
Column-I (Species) |
Column-II (Electronic Configuration) |
||
A. | \(Cr\) | (i). | \([Ar]3d^84s^0\) |
B. | \(Fe^{2+}\) | (ii). | \([Ar]3d^{10}4s^1\) |
C. | \(Ni^{2+}\) | (iii). | \([Ar]3d^64s^0\) |
D. | \(Cu\) | (iv). | \([Ar]3d^54s^1\) |
(v). | \([Ar]3d^64s^2\) |
Options: | A | B | C | D |
1. | iv | iii | i | ii |
2. | i | ii | iii | v |
3. | v | iv | iii | ii |
4. | iv | v | iii | ii |
Assertion (A): | All isotopes of a given element show the same type of chemical behaviour. |
Reason (R): | The chemical properties of an atom are controlled by the number of electrons in the atom. |
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. |