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Standard XII
Chemistry
Question

The order of electronegativity for halogens is :
  1. F > CI > Br > I
  2. I > Br > CI > F
  3. I > CI > Br > F
  4. CI > F > Br > I

A
I > Br > CI > F
B
CI > F > Br > I
C
F > CI > Br > I
D
I > CI > Br > F
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Solution
Verified by Toppr

The correct option is A F > CI > Br > I
It decreases on moving down the group because size of atom increases. Decreasing order of electro-negativity of halogens is F, Cl, Br, I. Fluorine has highest electronegativity among all the known elements.

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Q1

For the following

(a) I− (b) Cl− (c) Br−
The increasing order of nucleophilicity would be


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Q2
Statement: The decreasing order of electron affinity of F, CI, Br is F > CI > Br

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Q3
Use your knowledge of electronegativities, to arrange the following bonds in terms of increasing ionic character
C−H,F−H,Na−CI,Br−H,K−F
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If true enter 1, else enter 0.
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Q4

Among halogens, the correct order of amount of energy released in electron gain (electron gain enthalpy ) is
(a) F > Cl > Br > I (b) F < Cl < Br < I (c) F < Cl > Br > I (d) F < Cl < Br < I

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Q5
The correct order of polarizability is I−,Br−,Cl−,F−
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