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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.
Nomenclature of spiro compounds Compounds where one carbon atom is common to two dissimilar rings are known as spiro compounds. The IUPAC or International Union of Pure and App
Q. What are the primary factors of influence solubility? Ans. Solubility is the extent to which a solute dissolves in a solvent. Solutions that have larger quantities of
role of modifiers in solvent extraction of metal ion
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state functions of lime and soda in lime soda process
Uses of Formic acid - Carboxylic acids (a) Formic acid is used in the laboratory for preparation of carbon monoxide. (b) Formic acid is used in the preservation of fruits.
characteristics of irreversible reaction
Types of spectrometers: The two types of spectrometers for ICP-AES are: sequential spectrometers and simultaneous spectrometers. Those have the capabilities of measuring the v
Q. Determine the peroxide value in the of fat? After undertaking this activity, you will be able to: • determine the peroxide value in a given sample of fats/oils, and •
Q)why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction? Ans) The Standard free energy of formation of Cu2S is greater than
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