Plutonium Appearance & Characteristics. Radioactive and toxic. Plutonium is a silvery radioactive metal that tarnishes in air to give a yellow oxide coating. It has six allotropic forms, which vary widely in crystal structure and density. The metal is chemically reactive, forming compounds with the halogens, carbon, nitrogen, and silicon.
Rickets is a condition that affects bone development in children. It causes the bones to become soft and can lead to bone deformities. It is often characterised by an appearance of bowed legs. In adults, it is known as osteomalacia or soft bones.
A lack of vitamin D causes most cases of rickets, but this disorder can also run in families. Vitamin D helps the bones absorb calcium and phosphorus from food.When your child does not get enough vitamin D, his or her bones do not get the necessary nutrients that make bones strong. lack of vitamin D causes most cases of rickets, but this disorder can also run in families. Vitamin D helps the bones absorb calcium and phosphorus from food.