Ionic compounds form when the electronegativity difference between two elements is so great, the metal \"takes\" the non-metal\'s electron. In general, metals have a low electronegativity while non-metals have a high electronegativity, and the periodic trend shows that electronegativity decreases down and left from Fluorine. Two examples of ionic compounds are Sodium Chloride (NaCl) and Potassium Bromide (KBr). Solution Ionic compounds form when the electronegativity difference between two elements is so great, the metal \"takes\" the non-metal\'s electron. In general, metals have a low electronegativity while non-metals have a high electronegativity, and the periodic trend shows that electronegativity decreases down and left from Fluorine. Two examples of ionic compounds are Sodium Chloride (NaCl) and Potassium Bromide (KBr)..

1. Ionic compounds form when the electronegativity difference between two elements
is so great, the metal "takes" the non-metal's electron. In general, metals have a low
electronegativity while non-metals have a high electronegativity, and the periodic trend shows
that electronegativity decreases down and left from Fluorine. Two examples of ionic compounds
are Sodium Chloride (NaCl) and Potassium Bromide (KBr).
Solution
Ionic compounds form when the electronegativity difference between two elements
is so great, the metal "takes" the non-metal's electron. In general, metals have a low
electronegativity while non-metals have a high electronegativity, and the periodic trend shows
that electronegativity decreases down and left from Fluorine. Two examples of ionic compounds
are Sodium Chloride (NaCl) and Potassium Bromide (KBr).