Which of the bonds has the largest electronegativity difference?
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Al, Se, P and S all belong to same period in periodic table.
Electronegativity increases as we move from left to right in a period of periodic table.
So, electronegativity order is:
S > P > Se > Al
Al is leat electronegative
So, electronegativity difference between Al and F will be maximum.
Answer: B
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