NEW
New Website Launch
Experience the best way to solve previous year questions with mock tests (very detailed analysis), bookmark your favourite questions, practice etc...
1

AIPMT 2008

MCQ (More than One Correct Answer)
Which one of the following arrangements does not give the correct picture of the trends indicated against it ?
A
F2 > Cl2 > Br2 > I2 : Bond dissociation energy
B
F2 > Cl2 > Br2 > I2 : Electronegativity
C
F2 > Cl2 > Br2 > I2 : Oxidizing power
D
F2 > Cl2 > Br2 > I2 : Electron gain enthalpy

Explanation

For Diatomic molecules (X2) of halogens the bond dissociation energy decreases in the order:

Cl2 > Br2 > F2 > I2

The oxidising power, electronegativity and relativity decrease in the order:

F2 > Cl2 > Br2 > I2

Order of Electron gain enthalpy of halogens

Cl2 > F2 > Br2 > I2

The low value of electron gain enthalpy of fluorine is probably due to small size of fluorine atom.

Joint Entrance Examination

JEE Main JEE Advanced WB JEE

Graduate Aptitude Test in Engineering

GATE CSE GATE ECE GATE EE GATE ME GATE CE GATE PI GATE IN

Medical

NEET

CBSE

Class 12