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Q. No.The lone pairs of electrons can be defined as:
| 1. | Electron pairs that participate in bonding.
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| 2. | Electron pairs that do not participate in bonding.
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| 3. | Electron pairs that are present in inner most shell.
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| 4. | Electron pairs that are present in valence shell of ions. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct Lewis structure of acetic acid is:
| 1. |  |
2. |  |
| 3. |  |
4. | None of the above. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn electron-deficient compound among the following is:
| 1. | (SiH3)2 | 2. | (BH3)2 |
| 3. | PH3 | 4. | (CH3)2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe Lewis dot symbols for atoms of the elements Mg, Na, O, and N, respectively, would be:
| 1. |  |
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| 2. |  |
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| 3. |  |
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| 4. |  |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLewis symbols for the atoms and ions: S and S2–; Al and Al3+; H and H– respectively, would be:
| 1. |  |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich among the following does not contain a set of isoelectronic species?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements is incorrect?
| 1. | For isoelectronic species, a smaller positive charge on the cation results in a smaller ionic radius. |
| 2. | For isoelectronic species, a greater negative charge on the anion results in a larger ionic radius. |
| 3. | Atomic radius increases as you move down Group 1 of the Periodic Table. |
| 4. | Atomic radius decreases across Period 2 from left to right. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following pairs of ions are isoelectronic and isostructural?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe significance of the octet rule is:
1. To determine the stability of atoms.
2. To find the hybridization of elements.
3. To calculate the number of lone pairs.
4. None of the above.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich pair of ions from the following list do not constitute an iso-electronic pair?
1. Mn2+, Fe3+
2. Fe2+, Mn2+
3. O2–, F–
4. Na+, Mg2+
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Chapter Topics:
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