Be2+ is isoelectronic with which of the following ions?
1. H+
2. Li+
3. Na+
4. Mg2+

Subtopic:  Electronic Configuration |
 91%
From NCERT
AIPMT - 2014
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The correct order of the decreasing ionic radii among the following isoelectronic species is:

1. Ca2+>K+>S2->Cl-

2. Cl->S2->Ca2+>K+

3. S2->Cl->K+>Ca2+

4. K+>Ca2+>Cl->S2-

Subtopic:  Atomic Size |
 87%
From NCERT
AIPMT - 2010
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The correct order of increasing electron affinity for the elements, O, S, F and Cl is:

1. Cl < F < O < S 2. O < S < F < Cl
3. F < S < O < Cl 4. S < O < Cl < F
Subtopic:  Electron Affinity (EA) |
 77%
From NCERT
AIPMT - 2010
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Amongst the elements with the following electronic configurations, which one of them may have the highest ionisation energy?

1. [Ne] 3s2 3p3

2. [Ne] 3s2 3p2

3. [Ar] 3d10  4s2 4p3

4. [Ne] 3s2 3p1

Subtopic:  Ionization Energy (IE) | Electronic Configuration |
 74%
From NCERT
AIPMT - 2009
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The correct order of decreasing second ionization enthalpy of Ti(22), V(23), Cr (24) and Mn(25) is:

1. Cr > Mn > V > Ti

2. V > Mn > Cr > Ti

3. Mn > Cr > Ti > V

4. Ti > V > Cr > Mn

Subtopic:  Ionization Energy (IE) |
 60%
From NCERT
AIPMT - 2008
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Which one of the following arrangements does not give the correct picture of the trends indicated against it?
1. F2> Cl2> Br2> I2 : Oxidising power
2. F<Cl>Br>I : Electron gain enthalpy
3. F2> Cl2> Br2> I2 : Bond dissociation energy
4. F> Cl > Br > I : Electronegativity

Subtopic:  Ionization Energy (IE) | Electronegativity | Electron Affinity (EA) |
 67%
From NCERT
AIPMT - 2008
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Among the following, the most characteristic oxidation states for lead and tin are, respectively:

1. +4, +2

2. +2, +4

3. +4, +4

4. +2, +2

Subtopic:  Electronic Configuration |
 62%
From NCERT
AIPMT - 2007
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A configuration with the lowest ionization enthalpy among the following is:
1. \(1 s^2 2 s^2 2 p^5\)\(1 s^2 2 s^2 2 p^5\)
2. \(1 s^2 2 s^2 2 p^3\)
3. \(1 s^2 2 s^2 2 p^6 3 s^1\)
4. \(1 s^2 2 s^2 2 p^6\)

Subtopic:  Ionization Energy (IE) |
 79%
From NCERT
AIPMT - 2007
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Identify the correct order of the size of the following:

1. Ca2+<K+<Ar<S2-<Cl-

2. Ca2+<K+<Ar<Cl-<S2-

3. Ar<Ca2+<K+<Cl-<S2-

4. Ca2+<Ar+<K+<Cl-<S2-

Subtopic:  Atomic Size |
 82%
From NCERT
AIPMT - 2007
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Which one of the following orders is not in accordance with the property stated against?

1. F2>Cl2>Br2>I2 : Oxidising power

2. Hl>HBr>HCl>HF : Acidic property in water

3. F2>Cl2>Br2>I2 : Electronegativity

4. F2>Cl2>Br2>I2 : Bond dissociation energy

Subtopic:  Ionization Energy (IE) | Electronegativity |
 76%
From NCERT
AIPMT - 2006
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