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.
Square miles to square feet conversion table shows the most common values for your quick reference. Also, you may use the converter below to convert any other values. 1 Square Mile = 27 878 400 Square Feet. Sq. mile is an imperial and U.S. customary unit and is used mostly in measuring land. The abbreviations are mi2 and sq mi. Sq. foot is an imperial, U.S. customary area unit. It is used mostly in real estate, architecture and interior space plans.