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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.
how to make assignmant//
Carbon has maximum catenation ability. The self-linkage of the atoms of elements to make long chains is known as catenation.
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what is the chemistry of reaction for NH4+ with SO4 2- and CO3 2- ?
The energy released when one mole of ionic crystal is produced by the combination of the corresponding gaseous (+ve) and (-ve) ions brought from infinite distance is known as latti
formula of acetic acid
Explain Bromination of N-N-dimethylaniline Bromination of N,N-dimethylaniline is faster because nitrogen has an unshared electron pair that can stabilize the carbocation inter
1. The temperature of the warm water bath is recorded too high. How will this technique error affect the reported activation energy for the reaction - too high or too low? explain
The reversible hydration of carbon dioxide The reversible hydration of carbon dioxide to carbonic acid is an acid-catalyzed addition of water that is mechanistically identical
what is the reason for kmno4 to exibhit pink colour
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