In most cases, back pain will improve in a few weeks or months, although some people experience long-term pain or pain that keeps coming back. Types of back pain Backache is most common in the lower back ('lumbago'), although it can be felt anywhere along your spine, from your neck down to your hips.
Graphene is made of a single layer of carbon atoms that are bonded together in a repeating pattern of hexagons. Graphene is one million times thinner than paper; so thin that it is actually considered two dimensional. Carbon is an incredibly versatile element.
Benzene Series. CnH2n-6. Benzene-C6H6. Benzene is hydrocarbon made up of 6 carbons and 6 hydrogen atoms. If forms a six sided ring. It was once believed to be a structure that had alternating double and single bonds.If this were the case, the bond lengths would be longer for the single bonds and shorter for the double.However this is not the case.enzene Series. CnH2n-6. Benzene-C6H6. Benzene is hydrocarbon made up of 6 carbons and 6 hydrogen atoms. If forms a six sided ring. It was once believed to be a structure that had alternating double and single bonds.