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Q. Which of the following are the most and the least electronegative elements in the periodic table?
Answer: Fluorine and Caesium
Notes: Caesium is the least electronegative element in the periodic table and Fluorine is the most electronegative. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

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📌 Question Number: 1 in Chemistry-9-Periodic Table in the above course in App.