Carbon, Hydrogen, Nitrogen, and Oxygen Have the Following Atomic Radii

question 11

Multiple Choice

Carbon, hydrogen, nitrogen, and oxygen have the following atomic radii (in picometres) : C = 77; H = 37; O = 73. Which of the following covalent bonds is the longest?

• A) C-C
• B) C-O
• C) C=C
• D) C-H
• E) C  C

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Definitions:

Reactivity

The inclination of a material to participate in chemical changes, alone or in combination with other elements, leading to the liberation of energy.

Chlorine

A highly reactive, greenish-yellow gaseous element used in water purification and the production of numerous chemicals.

Aluminum Chloride

A chemical compound with the formula AlCl3, widely used in the chemical industry as a catalyst and as a component in a variety of chemical reactions.

O,p-director

Substituents in aromatic substitution reactions that direct incoming substituents to the ortho and para positions relative to themselves.