1. And why did he call it polar covalency?

2. This is pure covalency. This is polar covalency.

3. The relationship between bond valence and bond covalency has been investigated by a semiempirical method.

4. So you can see that polar covalency is a tendency towards ionic bonding.

5. Because this is a dipole, he chose the pole part of dipole to give us polar covalency.

6. This is the homonuclear bond energy for hydrogen in pure hydrogen. There we have perfect covalency.

7. The results of calculation show that the bonds between lanthanum and coordination atoms have certain extent covalency.