Linear molecular geometry

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Idealised structure of a compound with linear geometry.
Structure of beryllium fluoride (BeF2), a compound with a linear geometry.

In chemistry, the Linear molecular geometry describes the arrangement of three or more atoms placed at an expected bond angle of 180°. Linear organic molecules, e.g. acetylene (HC≡CH), are often described by invoking sp orbital hybridization for the carbon centers. Many linear molecules exist; prominent examples include carbon dioxide (O=C=O), hydrogen cyanide (HC≡N), and xenon difluoride (XeF2). Linear anions include azide (N3) and thiocyanate (SCN). Linear cations include nitronium ion (NO2+).[1]

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  1. ^ Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.

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