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.
Home Â» Spine Conditions Â» Degenerative Joint Disease. DJD is a medical abbreviation for degenerative joint disease, a common condition that often develops with age. DJD, also known as osteoarthritis, occurs when the cartilage that cushions the joints throughout the body gradually wears away.