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they r coloured due to electronic transitions in the constituent atoms....and photons are emitted which fall in the visible range..hence they appear coloured

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Q: Why some organic compound are coloured in nature?
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What are some Organic compound?

Organic compounds are those made out of Carbon.


Difference in an organic compound and an inorganic compound?

Basically, organic compounds have carbon. Inorganic do not (though there are some exceptions).


Does an organic compound contain nitrogen?

Some do, but not all. The one element needed for a compound to be considered organic is carbon.


Is it true that some organic compounds do not have carbon?

No, by definition an organic compound contains carbon.


Is sodium fluoride a organic or inorganic compound?

it is an organic salt but shows some properties of inorganic compound as solubility in water.


Is calcium chloride inorganic or organic?

Calcium chloride (CaCl2) is an inorganic compound.


What are organic?

A compound containg carbon (but some exceptions exist).


What are some organic compounds that begin with the letter E?

Ethanol is an organic compound. It begins with the letter E.


Is electrolyte an organic compound?

Not necessarily. Many organic compounds are non-electrolytes, though some, including organic acids and their salts, are electrolytes.


What is definition of organic compound and some examples?

Some examples of organic compounds are lipids butane and propane... The actual definition of it I am unsure of but by my understanding it is a compound with living origin and/or used as a building block for life


With a few exceptions compounds that contain the element hydrogen are organic compounds?

its not hydrogen that makes a compound organic but carbon. With a few exceptions, compounds that contain the element carbon are organic compounds. Some common exceptions are, CO2, CO, all carbonates as well as all the allotropes of carbon.


What are the significant difference between organic and inorganic compound?

Basically, organic compounds have carbon. Inorganic do not (though there are some exceptions).