Chemistry · Solution and Colloids
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Both NaNO3 an CaCO3 crystallize in Rhombohedral forms therefore they are:
- A
Allotropes
- B
Polymorphous
- C
Isomorphous
- D
None of these
Two or more substances having the same crystal structure called isomorphous.
Allotropes refer to different structural forms of the same element, exhibiting different physical properties. Since NaNO3 and CaCO3 are different compounds, not different forms of the same element, this option is incorrect.
Polymorphous substances are those that exist in more than one crystal form. This term typically applies to a single substance, not to comparing different substances like NaNO3 and CaCO3, making this option incorrect.
Isomorphous substances are different compounds that crystallize in the same crystal structure. NaNO3 and CaCO3 both crystallize in rhombohedral forms, making them isomorphous.
This option is incorrect because 'Isomorphous' is the correct answer.
Tagged under Chemistry · Solution and Colloids · 2014