1 When the third energy level has 8 electrons, the next 2 electrons go into the fourth energy level. 2  The electrons in the energy level farthest from the nucleus are called valence electrons. 3  Atoms in the same column (group) in the periodic table have the same number of valence electrons.
Axona is part of the Medical Foods class and treats Alzheimer's Disease. Medical foods are used to treat various conditions including Alzheimer's disease, osteoarthritis, diabetic neuropathy, and depression. They work by supplying nutrition not available in a normal diet for the management of certain diseases.
For other uses, see Altoona. Altoona is a city in south central Pennsylvania Blair County, Pennsylvania, United States. It is the principal city of the Altoona Metropolitan Statistical Area (MSA). The population was 46,320 at the time of the 2010 Census, making it the eleventh most populous city in Pennsylvania.