JEE Main 202529 JanuaryMorning Shift
- Exam
- JEE Main
- Year
- 2025
- Date
- 29 January
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Classification of Elements and Periodicity in Properties
JEE Main 2025 · 29 January · Morning Shift · Chemistry · Classification of Elements and Periodicity in Properties
An element ' (E^ ) has the ionisation enthalpy value of (374 ~kJ...
An element ' (E^{\prime}) has the ionisation enthalpy value of (374 \mathrm{~kJ} \mathrm{~mol}^{-1}). ' ' reacts with elements (\mathrm{A}, \mathrm{B}, \mathrm{C}) and D with electron gain enthalpy values of and (-295 \mathrm{~kJ} \mathrm{~mol}^{-1}), respectively. The correct order of the products EA, EB, EC and ED in terms of ionic character is :
Options
- A(\mathrm{ED}\gt\mathrm{EC}\gt\mathrm{EB}\gt\mathrm{EA})
- B(\mathrm{EA}\gt\mathrm{EB}\gt\mathrm{EC}\gt\mathrm{ED})
- C(\mathrm{EB}\gt\mathrm{EA}\gt\mathrm{EC}\gt\mathrm{ED})
- D(\mathrm{ED}\gt\mathrm{EC}\gt\mathrm{EA}\gt\mathrm{EB})
Correct answer
C. (\mathrm{EB}\gt\mathrm{EA}\gt\mathrm{EC}\gt\mathrm{ED})
Step-by-step solution
The element having high value of Electron gain enthalpy (magnitude) will form a compound having higher ionic character so order of ionic character