Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s22s22p3, the simplest formula for this compound is : 

1. Mg2X3

2. MgX2

3. Mg2X

4. Mg3X2

Subtopic:  Nature of Compound |
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The incorrect match among the following is -

1. B < C < N < O (increasing first ionisation enthalpy)

2. I < Br < F < Cl (increasing electron gain enthalpy)

3. Li < Na < K < Rb (increasing metallic radius)

4. Al3+ < Mg2+ < Na+ <F- (increasing ionic size)

Subtopic:  Electron Affinity (EA) |
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Which one of the following orders is correct for the bond dissociation enthalpy of halogen

molecules?

1. Cl2>Br2>F2>I2               

2. Br2>I2>F2>Cl2

3. F2>Cl2>Br2>I2               

4. I2>Br2>Cl2>F2

Subtopic:  Electron Affinity (EA) |
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