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Whereas a pure molecular species has a definite stoichiometry, this is not often true for solids. Defects in crystals will include vacancies (atoms missing from their expected sites) and interstitials (extra atoms in sites normally open in the unit cell). An imbalance of defects involving different elements shall introduce nonstoichiometry. This is common in compounds of transition metals, where variable oxidation states are found. As describe, the sodium tungsten bronzes are formulated as NaxWO3, where x can have any value in the range 0-0.9.
Fig. 1. Alternative views of the CsCl structure
what is the mechanism of acyl chloride reaction with alcohol and why does it react in this way ?
In 2008, Safeway has converted all its trucks to bio-diesel B20 which is a mixture of 20% of bio-diesel produced from soybean and 80% of diesel in volume. It claimed that 34,000 to
names for : A , B , C , D , E , F ,..........., X , Y , Z .
how to begin the topic of colloids for assignment?
Characterisation and Purification of organic compounds The study of organic compounds begins along with the characterization of the compound and the determination of its molecu
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Action of grignard reagents on carbonyl compounds with examples
Physical properties of Amino acids (a) Amino acids are colourless, crystalline substances comprising sweet taste. They melt along with decomposition at higher temperature (much
What is heat atomisatin? Solution : Heat of atomisation or enthalpy of atomisation is the energy required to dissociate one mole of a given substance into atoms.
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