arctan - the inverse function of the tangent; the angle that has a tangent equal to a given number. arc tangent, arctangent, inverse tangent. circular function, trigonometric function - function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle.
Best Answer: Benzene is a molecule (C6 H6) that has six carbons and six hydrogens in a conjugated system (alternating double bonds). The conjugated double bonds make Benzene aromatic.Aromatic describes conjugated ring systems (rings that feature a double bond for every other Carbon-Carbon bond such as seen with Benzene). However, aromatic rings can feature more than 6 carbons. Benzene is an example of an aromatic compound.Phenyl is usually used in the term Phenyl group. You can think of a phenyl group as what you call Benzene when it is a functional group for a larger molecule (or a substituent). One of benzene's hydrogens is replaced by the attachment of a more complex molecule.Source(s): One year college organic chemistry.henyl is usually used in the term Phenyl group. You can think of a phenyl group as what you call Benzene when it is a functional group for a larger molecule (or a substituent). One of benzene's hydrogens is replaced by the attachment of a more complex molecule. Source(s): One year college organic chemistry.
Benzene is an important organic chemical compound with the chemical formula C 6 H 6. Its molecule is composed of 6 carbon atoms joined in a ring, with 1 hydrogen atom attached to each carbon atom.enzene is a natural constituent of crude oil, and is one of the most elementary petrochemicals. Benzene is an aromatic hydrocarbon and the second [ n ]- annulene ([6]-annulene), a cyclic hydrocarbon with a continuous pi bond.