alleryWhich sequence is in INCREASING order of electronegativity?
AF > Cl > Br > I
BI > Br > Cl > F
CCl > Br > F > I
DF > Br > Cl > I
Answer & Solution
Correct answer: B. I > Br > Cl > F
1. F, Cl, Br and I all belong to Group 17, the halogens.
2. Electronegativity decreases down a group as atomic radius grows.
3. F sits at the top and has the highest electronegativity.
4. I sits at the bottom of this list and has the lowest electronegativity.
5. The increasing order goes I, then Br, then Cl, then F.
6. Only option B follows that order.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 1 'Periodic Table' (aplustopper.com extract)_
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