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Q. No.The number of oxides among the following that exhibit an amphoteric nature is:
(a) \(Na_2O\)
(b) \(As_2O_3\)
(c) \(NO\)
(d) \(N_2O\)
(e) \(Cl_2O_7\)
1. 0
2. 1
3. 2
4. 3
(a) \(Na_2O\)
(b) \(As_2O_3\)
(c) \(NO\)
(d) \(N_2O\)
(e) \(Cl_2O_7\)
1. 0
2. 1
3. 2
4. 3
Subtopic: Nature of Compound |
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| The correct electronic configuration of an element that is just above the 4th period and belongs to the 16th group: |
1. 4s23d104p4
2. 2s22p4
3. 3s23p4
4. 5s25d104p4
Subtopic: Electronic Configuration |
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Subtopic: Nature of Compound |
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The correct order of electron gain enthalpy is:
1. S > Se > Te > O
2. Te > Se > S > O
3. O > S > Se > Te
4. S > O > Se > Te
Subtopic: Electron Affinity (EA) |
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Consider the following compounds:
BeO, BaO, Be(OH)2, Sr(OH)2
The amphoteric compound(s) are:
| 1. | BeO, BaO | 2. | BaO, Be(OH)2 |
| 3. | Be(OH)2, BeO | 4. | Sr(OH)2, Be(OH)2 |
Subtopic: Nature of Compound |
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The set that contains atomic numbers of only transition elements is:
1. 21, 32, 53, 64
2. 9, 17, 34, 38
3. 21, 25, 42, 72
4. 37, 42, 50, 64
Subtopic: Modern Periodic Table & Periodicity |
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Subtopic: Modern Periodic Table & Periodicity |
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Subtopic: Modern Periodic Table & Periodicity |
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The element having a greatest difference between its first and second ionization energies, is:
1. Ca
2. Sc
3. K
4. Ba
Subtopic: Ionization Energy (IE) |
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NEET 2026 - Target Batch - Vital
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The ionic radii (in Å) of are respectively :
1. 1.36, 1.40 and 1.71
2. 1.36, 1.71 and 1.40
3. 1.71, 1.40 and 1.36
4. 1.71, 1.36 and 1.40
Subtopic: Atomic Size |
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