The following bonds are to be arranged in the decreasing order of bond polarity. Also, the bond polarity with a polar arrow is to be indicated. Se − Cl, Se − F, Se − Br Concept introduction: Electronegativity is the tendency of an atom to attract the shared electrons in the bond towards itself. The more electronegative atom will more attract the bonding electrons towards itself than the less electronegative atom. Therefore the electrons will spend more time with the more electronegative atom than an electropositive atom. The electronegative atom will acquire the partial negative charge and the electropositive atom will acquire a partial positive charge. The polarity is represented by an arrow towards the more electronegative element. Here, B is the electronegative atom and A is the electropositive atom. Bond polarity can be estimated by Δ EN . Δ EN is the electronegativity difference between the atoms bonded to each other. The formula to calculate Δ EN in AB bond is as follows: Δ EN = ( electronegativity of B ) − ( electronegativity of A ) Here, B is the electronegative atom and A is the electropositive atom.

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Chapter 9.5, Problem 9.5BFP

(a)

Interpretation Introduction

Interpretation:

The following bonds are to be arranged in the decreasing order of bond polarity. Also, the bond polarity with a polar arrow is to be indicated.

Se−Cl, Se−F, Se−Br

Concept introduction:

Electronegativity is the tendency of an atom to attract the shared electrons in the bond towards itself. The more electronegative atom will more attract the bonding electrons towards itself than the less electronegative atom. Therefore the electrons will spend more time with the more electronegative atom than an electropositive atom. The electronegative atom will acquire the partial negative charge and the electropositive atom will acquire a partial positive charge. The polarity is represented by an arrow towards the more electronegative element.

Here, B is the electronegative atom and A is the electropositive atom.

Bond polarity can be estimated by ΔEN. ΔEN is the electronegativity difference between the atoms bonded to each other. The formula to calculate ΔEN in AB bond is as follows:

ΔEN=(electronegativity of B)−(electronegativity of A)

Here, B is the electronegative atom and A is the electropositive atom.

(b)

Interpretation Introduction

Interpretation:

The following bonds are to be arranged in the decreasing order of bond polarity. Also, the bond polarity with a polar arrow is to be indicated.

S−B, F−B, Cl−B

Concept introduction:

Electronegativity is the tendency of an atom to attract the shared electrons in the bond towards itself. The more electronegative atom will more attract the bonding electrons towards itself than the less electronegative atom. Therefore the electrons will spend more time with the more electronegative atom than an electropositive atom. The electronegative atom will acquire the partial negative charge and the electropositive atom will acquire a partial positive charge. The polarity is represented by an arrow towards the more electronegative element.

Here, B is the electronegative atom and A is the electropositive atom.

Bond polarity can be estimated by ΔEN. ΔEN is the electronegativity difference between the atoms bonded to each other. The formula to calculate ΔEN in AB bond is as follows:

ΔEN=(electronegativity of B)−(electronegativity of A)

Here, B is the electronegative atom and A is the electropositive atom.

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