For AB bond if percent ionic character is plotted against electro… - Vidyadip

MCQ

For $AB$ bond if percent ionic character is plotted against electronegativity difference $(X_A -X_B),$ the shape of the curve would look like The correct curve is

A
$(A)$
B
$(B)$
✓
$(C)$
D
$(D)$

✓

Answer

Correct option: C.

$(C)$

c
$50 \,\%$ ionic character occurs when the electronegativity difference between the atoms is equal to $1.7$. This is evident from curve $C$ and hence is the most appropriate.

$\Delta E . N .=1.7 \Rightarrow 50\,\%$ ionic and $50 \,\%$ covalent

$\Delta E . N .\,>\,1.7 \Rightarrow$ more than $50\, \%$ ionic and less than $50 \,\%$ covalent

$\Delta E . N .\,<\,1.7 \Rightarrow$ less than $50\, \%$ ionic and more than $50\, \%$ covalent

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