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Standard XII

Chemistry

Electronegativity

The electrone...

Question

The electronegativity of $K$ = 0.8 and $C l$ = 3.0. The type of bond formed between $K$ and $C l$ is :

pure covalent bond

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hydrogen bond

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metallic bond

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electrovalent bond

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Solution

The correct option is C electrovalent bond
As electronegative difference is more than 1.7, it is ionic in character which is otherwise called electrovalent bond.

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Similar questions

Q. Given the electronegativities of

B = 2.0

and

C l = 3.0

I

. It is possible to determine that

B {C l}_{3}

is a polar molecule.

I I

. The electronegativity difference between boron and chlorine creates an uneven sharing of electrons in a

B - C l

covalent bond.

Q. Assertion :During covalent bonding the electronegativity difference between two atoms is greater than

1.7

Reason: Covalent bond is formed by sharing of electrons between atoms that have same size

Q. Calculate the electronegativity (eV) of chlorine from the bond energy of

C l - F

bond (61 kcal mol

^{- 1}

F - F

bond (

38

kcal mol

^{- 1}

) and

C l - C l

bond (

58

kcal mol

^{- 1}

) and electronegativity of fluorine (

4.0

eV).
Based on Pauling's scale :

(E N)_{F} - (E N)_{C l} = k \sqrt{Δ} = 0.208 \sqrt{Δ}

where,

Δ

is resonance energy and k is the conversion factor (which is

0.208

for converting kcal into eV).

Q. Calculate the electronegativity of chlorine from bond energy of

C l - F

bond

(61 k c a l m o l^{- 1})

F - F (38 k c a l m o l^{- 1})

and

C l - C l

bond

(58 k c a l m o l^{- 1})

and electronegativity of fluorine

4.0 e V

Q. Assuming Covalent bonding between

N a

and

C l

, What is the expected bond order ?

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The electronegativity of K = 0.8 and Cl = 3.0. The type of bond formed between K and Cl is :

The correct option is C electrovalent bondAs electronegative difference is more than 1.7, it is ionic in character which is otherwise called electrovalent bond.

The electronegativity of $K$ = 0.8 and $C l$ = 3.0. The type of bond formed between $K$ and $C l$ is :

The correct option is C electrovalent bond
As electronegative difference is more than 1.7, it is ionic in character which is otherwise called electrovalent bond.