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Non stoichiometric compounds do not match to law of definite proportions.
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∙ 8y ago
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Are the elements that make up a compound joined in a fixed proportion?
This is an old rule (Law of definite proportions) not valid for nonstoichiometric compounds.
Why defects in crystals are called thermodynamic defects?
crystalline defets are present in a crystal due to the presence of impurities.
Which event would be impossible to explain by using John Daltons model of the atom?
A Dalton's model of atom doesn't exist. Dalton principles are not in agreement with the discovery of isotopes and nonstoichiometric compounds.
Which point defect lowers the density of crystals?
Any change in the configuration of the lattice of the crystal which causes the crystal structure to deviate from the ideal structure is called a crystal structure. It is of the following types - Point defects Line defects Surface defects volume defects
What are the defects of plastics?
defects like airburs,colour streaks,flash,flow line, jeeting, etc
What cannot possibly have a variable composition?
Nonstoichiometric compounds have a variable composition.
What you mean by nonstoichiometry?
The chemical composition of nonstoichiometric compounds do not respect the law of definite proportions.
Is ratio of atoms is always the same in a compound?
Generally yes (the law of definite proportions); as exceptions - nonstoichiometric compounds.
Is the composition of a substance always same?
Today this assertion is only partially valid; many nonstoichiometric compounds are known.
Is the law of definite composition applicable to compounds only?
This law is not valid for all chemical compounds (ex. nonstoichiometric compounds).
Are the elements that make up a compound joined in a fixed proportion?
This is an old rule (Law of definite proportions) not valid for nonstoichiometric compounds.
How do you spell defects?
Defects.
What are latent defects and patent defects?
Latent defects are not obvious and are not easily discoverable while patent defects are obvious.
What is learning defects?
what the defects of timber
When was Defects of Character created?
The Defects was created in 1979.
What is meant by nonstoichiometric?
"Non-stoichiometric" refers to a solid chemical compound in which the numbers of atoms of the elements present cannot be expressed as a ratio of small whole numbers.
Is postulate no 4 of Dalton atomic theory right in modern chemistry?
No, because today are known an immense number of nonstoichiometric compounds (also called berthollides).
