The energy needed for the reaction to occur is less than the total energy. The Pauling scale measures electronegativity on a scale of 000-400 with 000 being the weakest force and 400 being the strongest force. College Biochemistry Major Ionic Bond Vs Covalent Bond Covalent Bonding Covalent Bonding Worksheet Ionic Bonding A covalent bond present between N and C Atom and ionic bond present between Na ion and NC ion. . The more you know. A molecule is basically said to be either a polar molecule non- polar molecule or ionic molecule. Three different conditions determine the type of chemical bond that the selected elements may form. If the electronegativity difference is less than 200 the bond is ionic. And the third way of obtaining this apart from giving away and accepting electrons as mentioned in the case of the ionic bonds. Ionic Bond vs Covalent Bond. Find more free tutorials videos and readin. In this a