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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.
Basic dyes: These types of dyes are the hydrochlorides or zinc chloride salts of colour bases comprising basic group sets. These dyes act along with anionic sites available on
explain types of ir spectrometer
Semisynthetic polymers These polymers are mainly derived from naturally taking place polymers by chemical changes. Since cellulose is naturally taking place polymers, cellulose
group1 metal reacts execess of oxygen
Condensation with formaldehyde - Miscellaneous reactions Phenol condenses with formaldehyde (excess) in presence of sodium hydroxide or acid (H + ) for about a week to form a p
Physical properties of Iodoform or tri-iodomethane (a) Iodoform is a yellow crystalline solid. (b) Iodoform has a pungent characteristic odour. (c) Iodoform is not solubl
Microcosmic Salt Bead Test Microcosmic salt, Na(NH 4 )HPO 4 .4H 2 O is as well used to identify specific cations just as borax. While microcosmic salt is burned in a loop of pl
EDTA charge is 4.and it is react with many compound to form other compounds
please read instruction carefully do not accept job if you are not able to do it i only accept high quality work
Ion mobility: Ion mobility is related to molar conductivity by the equations: which allows the mobilities, u+ and u- of the cation and anion to be determined from mol
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