The correct order of electron affinity is - Vidyadip

MCQ

The correct order of electron affinity is

A
$O> F > Cl$
B
$F > O > Cl$
C
$F > Cl > O$
✓
$Cl> F > O$

✓

Answer

Correct option: D.

$Cl> F > O$

d
On moving from left to right across a period, the electron affinity becomes more negative. On moving from top to bottom in a group, the electron affinity becomes less negative. Chlorine has more negative electron affinity than fluorine, Because adding an electron to fluorine ($2p$ orbital) causes greater repulsion than adding an electron to chlorine ($3p$ orbital) which is larger in size

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

At $298\,K$, a 1 litre solution containing $10\,m\,mol$ of $Cr _2 O _7{ }^{2-}$ and $100\,m\,mol$ of $Cr ^{3+}$ shows a $pH$ of $3.0$.

Given : $Cr _2 O _7^{2-} \rightarrow Cr ^{3+} ; E ^0=1.330\,V$ and

$\frac{2.303 RT }{ F }=0.059\,V$

The potential for the half cell reaction is $x \times 10^{-3}\,V$. The value of $x$ is $........$

What is the packet of energy called

The enthalpy of combustion of ${C_6}{H_{6(l)}}$ is $ -3250\, kJ$. When $0.39 \,g$ of benzene is burnt excess of oxygen in an open vessel, the amount of heat evolved is

The reaction $2 NO + Br _2 \rightarrow 2 NOBr$

takes places through the mechanism given below :

$NO + Br _2 \Leftrightarrow NOBr _2 \text { (fast) }$

$NOBr _2+ NO \rightarrow 2 NOBr \text { (slow) }$

The overall order of the reaction is $.....$.

Complexes $\left(\mathrm{ML}_{5}\right)$ of metals $\mathrm{Ni}$ and $Fe$ have ideal square pyramidal and trigonal bipyramidal grometries, respectively. The sum of the $90^{\circ}, 120^{\circ}$ and $180^{\circ}\;\; \mathrm{L}-\mathrm{M}- \mathrm{L}$ angles in the two complexes is

A hydrocarbon reacts with hypochlorous acid to give $ 1-$ chloro $-2$ -hydroxyethane. The hydrocarbon is

Which of the following pair gives same phenyl osazone ?

For per gram of reactant, the maximwn quantity of $N_2$ gas is produced in which of the following thermal decomposition reactions? (Given: Atomic wt. : $Cr\, = 52\, u, Ba\, = 137\, u$).

The size of the iso-electronic species $Cl^-$ , $Ar$ and $Ca^{2+}$ is affected by

Ester and acetamide are distinguished by