NIELIT 2017 DEC Scientist B - Section A: 32

Question

__________ are the most and the least electronegative elements in the periodic table.

• A. Fluorine and Caesium
• B. Hydrogen and Helium
• C. Carbon and Oxygen
• D. Chlorine and Fluorine

Answer 1

Caesium is the least electronegative element in the periodic table and Fluorine is the most electronegative element.

So, option A)Fluorine and Caesium will be the right answer.

Answer 2

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.

So, the correct answer is $(A).$