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Question:
(i) Differentiate between ionic, metallic, covalent and dipole-dipole bonds. Provide examples in each case.
(ii) With regard to electronic con?guration, what do all the elements in Group VII of the periodic table have in common?
(iii) Describe why hydrogen ?uoride (HF) has a higher boiling temperature than hydrogen chloride (HCl) (19.4ºC vs. - 85ºC), even though HF has a lower molecular weight.
(iv) On the basis of the hydrogen bond, explain the anomalous behaviour of water when it freezes. That is, why is there volume expansion upon solidi?cation?
(a) Copper has an atomic radius of 0.128 nm, a face-centered cubic crystal structure and an atomic weight of 63.5 g/mol. Compute
(i) the volume of a unit cell of copper
(ii) the atomic packing factor
(iii) the theoretical density of copper.
Chain growth or addition polymerisation It includes a series of reaction each of which consumes a reactive particle and generates another similar one. The reactive molecule m
the application of intervase
i want know about the whole concept of werner complex.how it is and why we should know..everything
Classification of Carboxylic acids (a) Carboxylic acids are categorized as dicarboxylic acids, tricarboxylic acids and monocarboxylic acids etc. depending upon the number of -
Q. Write electron configuration for a neutral atom of silicon? Writing Electron Configurations by means of Noble-Gas Notation Use noble-gas notation to write the electron confi
What is the effective nuclear charge of 2s for Fe?
In this synthesis of indole the addition of keto thioether to choloroamine to give sulphonium ion. this reaction is carried out at low temperature . why?
explain about law of chemical combinations in about 200 words?
I want to know how to determine the acid insoluble ash of a flour sample with principle,procedure as well as calculations.
what are the precedure of dillution and dissolution
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