A) Oxygen
B) Nitrogen
C) Fluorine
D) Sulphur
Correct Answer: A
Solution :
Fluorine is the most electronegative element. After fluorine, oxygen is the second most electronegative element. According to Pauling scale, the electronegativities of elements are as \[{{X}_{F}}=4.0,\text{ }{{X}_{Cl}}=3,\text{ }{{x}_{0}}=3.5,\text{ }{{X}_{s}}=2.5\]
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