Methyl cation, anion, and radical. Methyl cation. The methylium cation (CH3+) exists in the gas phase, but is otherwise not encountered. Some compounds are considered to be sources of the CH3+ cation, and this simplification is used pervasively in organic chemistry.
The square foot (plural square feet; abbreviated ft 2 or sq ft) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States and partially in Canada, United Kingdom, Hong Kong, Bangladesh, India and Pakistan. It is defined as the area of a square with sides of 1 foot.
Convert square feet to square meters. (sq ft to sq m) The square foot (plural form: square feet symbol or abbreviation: sq ft or (Sq Ft) is a unit of area used in several different systems, including Imperial units, English units and United States customary units. One square foot = 0.09290304 square meters (sq m).