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Why is that Li is the only element in group 1A that reacts with dinitrogen to a nitride
Purification of organic compounds Several methods are available for the purification of substances. Though, the selection of method, depends upon the nature of substance (if s
Q. Illustrate the physical property of matter? A physical property of a substance is a quality that can be observed and measured without changing the composition of the subst
the value of plank''s constant
What is the mass of electrons in grams?
what are the chemical poperties of p-block elements ?
A sample of water collected in the field had a pH of 6.8. By the time it was analyzed in the lab, the pH had decreased to 6.0. Give a possible explanation.
what are the standards of purity
The difference among Threshold energy and average energy of the molecules is known as activation energy.
The number of appositively charged ions surrounded a certain ion in an ionic crystal lattice is known as co- ordination number.
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