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Q.

Which is the least electronegative element in the modern periodic table

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a

 Fluorine

b

 Cesium

c

 Oxygen

d

Nitrogen

answer is B.

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Detailed Solution

According to Pauling’s scale fluorine is the most electronegative of all elements and has an electronegativity value of  4.0. 

Cesium on the other hand is the least electronegative with a value of 0.7.

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