Question

Arrange cl br and f in increasing order of electronegativity with suitable explanation

Answer 1

$\Large{ \underline{ \tt{ \pink{Required \: answer:}}}}$

The relative properties of elements in the periodic table is determined by its trends. They are interdependent on each other.

Electronegativity:

• It is the tendency of an atom to attract electrons towards itself when they are combined in a compound.
• It is the net result of tendency of attracting a bond forming electron pair.

Factors affecting Electronegativity:

• When Atomic size increases, Electronegativity decreases.
• When Nuclear charge increases, Electronegativity increases.

We have our Q.

To compare the electronegativities of Cl, Br and F

• Cl, Br and F are halogens and comes under the group 17, and are also known as Halogens.
• For comparing their electronegativies, we need to compare their atomic size and nuclear charge.

Down a group:-

1. Atomic radii increases and So, Electronegativity will decrease gradually.
2. Nuclear charge decreases, So Electronegativity will increase down the group.

So, The order will be

$\large{ \rm{ \red{ \boxed{ \rm{Br}}} \: < \: \red{ \boxed{ \rm{Cl}}} \: < \red{ \boxed{ \rm{ F}}}}}$

❍ Electronegativity decreases down the group.

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