Question

Which compound amongst the following shows maximum ionic character?
1mgcl2
2.BaCl2
3.NaCl
4.CsCl

Answer 1

CsCl shows maximum ionic character.

Option (4) is correct.

Explanation:

• The ionic character of a compound depend on the difference of the electronegativity values between their elements.
• More the difference in the electronegativity value more will be the ionic character.
• The electronegativity value of cesium (Cs) is 0.79.
• The electronegativity value of Chlorine (Cl) is 3.16
• Difference between the values = 3.16 = 0.79 = 2.37
• Also the size of cesium (cation) is greater than the anion.