An element 'E' has the ionisation enthalpy value of 374 kJ mol\(^{-1}\). 'E' reacts with elements A, B, C, and D with electron gain enthalpy values of \( -328 \), \( -349 \), \( -325 \), and \( -295 \) kJ mol\(^{-1}\), respectively. The correct order of the products EA, EB, EC, and ED in terms of ionic character is:
Show Hint
- \( {EA}>{EB}>{EC}>{ED} \)
- \( {ED}>{EC}>{EA}>{EB} \)
- \( {ED}>{EC}>{EB}>{EA} \)
- \( {EB}>{EA}>{EC}>{ED} \)
The Correct Option is C
Solution and Explanation
The ionic character of a compound depends on the difference in ionisation enthalpy and electron gain enthalpy. The larger the difference, the greater the ionic character. A compound with a more negative electron gain enthalpy will result in a stronger ionic bond. Given that the electron gain enthalpy values for elements A, B, C, and D are as follows:
- \( {A} \) has \( -328 \, {kJ/mol} \)
- \( {B} \) has \( -349 \, {kJ/mol} \)
- \( {C} \) has \( -325 \, {kJ/mol} \)
- \( {D} \) has \( -295 \, {kJ/mol} \)
The order of ionic character is given by the electron gain enthalpy, where \( {D} \) has the highest ionic character and \( {A} \) has the least. Thus, the correct order is (3): \( {ED}>{EC}>{EB}>{EA} \).
Top JEE Main Chemistry Questions
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- At equilibrium the concentrations of and in a sealed vessel at . What will be for the reaction
- Find out the major products from the following reactions
Cobalt chloride when dissolved in water forms pink colored complex $X$ which has octahedral geometry. This solution on treating with cone $HCl$ forms deep blue complex, $\underline{Y}$ which has a $\underline{Z}$ geometry $X, Y$ and $Z$, respectively, are
- The correct order of atomic radii is:
Top JEE Main Periodic properties Questions
- The element having the highest first ionization enthalpy is
- Given below are two statements:
Statement I: Fluorine has most negative electron gain enthalpy in its group.
Statement II: Oxygen has least negative electron gain enthalpy in its group.
In the light of the above statements, choose the most appropriate from the options given below. - Anomalous behaviour of oxygen is due to its
- In case of isoelectronic species the size of F– , Ne and Na+ is affected by:
- Lowest oxidation number of an atom in a compound \( A_2B \) is -2. The number of electrons in its valence shell is:
Top JEE Main Questions
- In a hydrogen like atom, when an electron jumps from the $M$ - shell to the $L$ - shell, the wavelength of emitted radiation is $\lambda$. If an electron jumps from $N$-shell to the $L$-shell, the wavelength of emitted radiation will be :
- Two masses $m$ and $\frac{m}{2}$ are connected at the two ends of a massless rigid rod of length $l$. The rod is suspended by a thin wire of torsional constant $k$ at the centre of mass of the rod-mass system(see figure). Because of torsional constant $k$, the restoring torque is $\tau =k\theta$ for angular displacement $\theta$. If the rod is rota ted by $\theta_0$ and released, the tension in it when it passes through its mean position will be:
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- The value of is
- The number of terms of an is even. The sum of the odd terms is and of the even terms is . The last term exceeds the first by . Then the number of terms in the series is ______.