Can someone show me the steps and also two examples on how to find which compound among four or five of them has the highest percentage of ionic character Solution The % of ionic character depends on the electronegativity difference between the two element which have been joined to form the compound Generally ionic character is highest for compounds between alkaline metals (electronegativity very low) and halogen (high value of electronegativity) The electronegativity trends increases from left to right in a period and decreases the down Hence the most ionic compound will be CsF (Flourie has the highest electronegativity on pauling scale equal to 4) The bonds of same element have zero ionic character i.e. F2,Cl2 etc .