You should have one unbonded pair of electrons left on the phosphorus. This pair is going to make the shape of the molecule slightly tetrahedral (like a pyramid) and will cause the over electron distribution to be off. Whenever a molecule is not symmetrical it has a dipole moment.
Osteoarthritis, Arthritis in Dogs. Osteoarthritis, also known as degenerative joint disease (DJD), is defined as the progressive and permanent long-term deterioration of the cartilage surrounding the joints.
Story at-a-glance 1  +. Intervertebral disc disease (IVDD) is a condition in which a disc develops a problem and the material inside escapes into the spinal column, ultimately causing pain, nerve damage, and even paralysis.2  The condition is seen more often in dogs than cats. There are two types of IVDD: Hansen Type I, which involves the acute, explosive herniation of a disc, and Hansen Type II, which is a gradual, progressive protrusion of disc material.