Molecules are held together by either covalent bonding or ionic bonding. Several types of non-metal elements exist only as molecules in the environment. For example, hydrogen only exists as hydrogen molecule. A molecule of a compound is made out of two or more elements.
In general, chiropractic services range from approximately $30 to $200 per session. Of course, each type of treatment has a different cost. For example, an initial consultation with a chiropractor may be provided at no charge, while a typical therapy session costs about $65 on average.
According to a salary report published by the Bureau of Labor Statistics, the salary of a chiropractor is about $132,388 per year. This number varies greatly as the higher earners among chiropractors make around $228,140 per annum while the least earners make approximately $31,030 per year on an average.