- 1(current)
Q. No.1. Li < B < Be < C < N
2. Li < Be < C < B < N
3. Li < Be < N < B < C
4. Li < Be < B < C < N
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | The oxidation state and coordination number (or covalency) of \(\mathrm{Al}\) in\( \left[\mathrm{AlCl}\left(\mathrm{H}_2 \mathrm{O}\right)_5\right]^{2+} \) are +3 and 6, respectively. |
| 2. | \(\mathrm{Na}_2 \mathrm{O}\) is a basic oxide and \(\mathrm{Cl}_2 \mathrm{O}_7\) is an acidic oxide |
| 3. | The following four species are called isoelectronic species: \( \mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+} \mathrm{and}~ \mathrm{Mg}^{2+}\) |
| 4. | Among the four species \(\mathrm{Mg}, \mathrm{Al}, \mathrm{Mg}^{2+}\) and \(\mathrm{A l^{3+},}\) the smallest one is \(\mathrm{Al}.\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \(\mathrm{Na^+ , Cl^-, O^- , NO^+}\)
2. \(\mathrm{N_2O, N_2O_4 , NO^+, NO}\)
3. \(\mathrm{Na^+ , Mg^{2+} , O^- , F^-}\)
4. \(\mathrm{Ca^{2+} , Ar, K^+, Cl^-}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | X is an alkali metal and Y is an alkaline earth metal. |
| 2. | X is an alkaline earth metal and Y is an alkali metal. |
| 3. | Both X and Y are alkali metals. |
| 4. | Both X and Y are alkaline earth metals. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | C < N < F < O | 2. | C < N < O < F |
| 3. | C < O < N < F | 4. | C < F < N < O |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor the second-period elements, the correct increasing order of first ionisation enthalpy is:
| 1. | Li < Be < B < C < O < N < F < Ne |
| 2. | Li < Be < B < C < N < O < F < Ne |
| 3. | Li < B < Be < C < O < N < F < Ne |
| 4. | Li < B < Be < C < N < O < F < Ne |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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