- 1(current)
Q. No.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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Level 1: 80%+
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The set representing the correct order of ionic radius is :
1. Li+> Be2+ > Na+> Mg2+
2. Na+> Li+> Mg2+ > Be2+
3. Li+> Na+> Mg2+ > Be2+
4. Mg2+ > Be2+ > Li+> Na+
Subtopic: Atomic Size |
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In which of the following arrangements the order is not according to the property indicated against it?
| 1. | Li < Na < K < Rb : Increasing metallic radius |
| 2. | I < Br < F < Cl: Increasing electron gain enthalpy (with negative sign) |
| 3. | B < C < N < O: Increasing first ionisation enthalpy |
| 4. | Al3+ < Mg2+ < Na+ < F- : Increasing ionic size |
Subtopic: Ionization Energy (IE) | Electron Affinity (EA) | Atomic Size |
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The ion having the highest value of ionic radius among the following is:
1. Li+
2. B3+
3. O2-
4. F-
Subtopic: Atomic Size |
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What is the correct increasing order of ionic radii for the following ions?
1. \(\mathrm{Mg}^{2+}<\mathrm{Na}^{+}<\mathrm{F}^{-}<\mathrm{O}^{2-}<\mathrm{N}^{3-}\)
2. \(\mathrm{N^{3–} < O^{2–} < F^– < Na^+ < Mg^{2+}}\)
3. \(\mathrm{F^– < Na^+ < O^{2–} < Mg^{2+} < N^{3–}}\)
4. \(\mathrm{Na^+ < F^–< Mg^{2+} < O^{2–} < N^{3–}}\)
1. \(\mathrm{Mg}^{2+}<\mathrm{Na}^{+}<\mathrm{F}^{-}<\mathrm{O}^{2-}<\mathrm{N}^{3-}\)
2. \(\mathrm{N^{3–} < O^{2–} < F^– < Na^+ < Mg^{2+}}\)
3. \(\mathrm{F^– < Na^+ < O^{2–} < Mg^{2+} < N^{3–}}\)
4. \(\mathrm{Na^+ < F^–< Mg^{2+} < O^{2–} < N^{3–}}\)
Subtopic: Atomic Size |
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The ionic radius of \(\text {Na}^+\) ion is \(1.02~\mathring A.\) The ionic radii (in \(\mathring A)\) of \(\text{Mg}^{2+}\) and \(\text{Al}^{3+},\) respectively, are:
| 1. | 0.68 and 0.72 | 2. | 1.05 and 0.99 |
| 3. | 0.72 and 0.54 | 4. | 0.85 and 0.99 |
Subtopic: Atomic Size |
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The increasing order of the atomic radii of the following elements is:
1. (d) < (c) < (b) < (a) < (e)
2. (a) < (b) < (c) < (d) < (e)
3. (b) < (c) < (d) < (a) < (e)
4. (c) < (b) < (a) < (d) < (e)
| (a) | C | (b) | O |
| (c) | F | (d) | Cl |
| (e) | Br | ||
2. (a) < (b) < (c) < (d) < (e)
3. (b) < (c) < (d) < (a) < (e)
4. (c) < (b) < (a) < (d) < (e)
Subtopic: Atomic Size |
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The incorrect decreasing order of atomic radii is:
1. \(Mg > Al > C > O\)
2. \(Al > B > N > F\)
3. \(Be > Mg > Al > Si\)
4. \(Si > P > Cl > F\)
1. \(Mg > Al > C > O\)
2. \(Al > B > N > F\)
3. \(Be > Mg > Al > Si\)
4. \(Si > P > Cl > F\)
Subtopic: Atomic Size |
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Match List-I with List-II
Choose the correct answer from the options given below :
1. A-IV, B-I, C-III, D-II
2. A-II, B-III, C-IV, D-I
3. A-IV, B-I, C-II, D-III
4. A-III, B-IV, C-II, D-I
| List-I | List-II | ||
| (A) | Al3+ < Mg2+ < Na+ < F– | (I) | Ionisation Enthalpy |
| (B) | B < C < O < N | (II) | Metallic character |
| (C) | B < Al < Mg < K | (III) | Electronegativity |
| (D) | Si < P < S < Cl | (IV) | Ionic radii |
1. A-IV, B-I, C-III, D-II
2. A-II, B-III, C-IV, D-I
3. A-IV, B-I, C-II, D-III
4. A-III, B-IV, C-II, D-I
Subtopic: Ionization Energy (IE) | Electronegativity | Atomic Size |
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The type of oxide formed by the element among Li, Na, Be, Mg, B and Al that has the least atomic radius is :
1. \(\mathrm{A}_2 \mathrm{O}_3\)
2. \(\mathrm{AO}_2\)
3. AO
4. \(\mathrm{A}_2 \mathrm{O}\)
1. \(\mathrm{A}_2 \mathrm{O}_3\)
2. \(\mathrm{AO}_2\)
3. AO
4. \(\mathrm{A}_2 \mathrm{O}\)
Subtopic: Atomic Size |
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- 1(current)
Q. No.
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