why carbon dioxide belongs to inorganic chemistry not organic like another carbon compounds?

Answer 1

Says who?

Carbon dioxide is discussed at length in most Organic chemistry classes. It is also important in Biochemistry.

If your teacher or instructor told you this then accept it as Inorganic at least until class is over. The usual reason that most individuals give for claiming that Carbon dioxide is Inorganic is that it contains No Carbon-Carbon or Carbon-Hydrogen bonds.

Originally, Organic chemistry was considered to be the study of compounds which came from living organisms. This definition was revised in 1828 when Friedrich Wöhler synthesized urea (considered an Organic compound) by heating ammonium cyanate (considered Inorganic).

Carbon monoxide, Carbon dioxide as well as metal carbonates, bicarbonates and cyanides are often excluded from Organic chemistry.

By the way: Urea [CON2H4 or (NH2)2CO] is considered Organic and contains no C-C or C-H bonds.

Answer 2

Organic compounds are not carbon compounds, they are compounds that have carbon-hydrogen bonds.

Carbon dioxide has no hydrogen, so no carbon-hydrogen bonds. Methane is the simplest organic molecule CH4,

Answer 3

it's simple really carbon dioxide helps plants grow and most plants are non organic plants and other carbon compounds helps our organic stuff grow...... atleast that's how i remember it from sciene in high school and grade school...