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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.
what are the applications of resonance effect
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Hexagonal Close Packed (HCP) Structure:- The cell of HCP system has 12 corner atoms, one at each corner of the hexagon with two base centered atoms, one at the top face of the
Difference between Mesomerism and Resonance Even though both resonance and mesomerism denote similar phenomenon, they are different in the following respect: Resonance inclu
What is mole concept?
Gattermann-koch aldehyde synthesis Benzene is transformed into benzaldehyde by passing a mixture of carbon monoxide and HCl gas within high pressure into the ether solution of
Addition reactions - Organic Chemistry Addition reactions are given by those compounds that have at least one p bond, i.e.,
what is the working principle of potentiometry
Ethelene+diaminotetraacetate---->1,4- diaminobutane from ethylene CH 2 =CH 2 +EDTA---->NH 2 -CH 2 -CH 2 -CH 2 -CH 2 -NH 2
my question is sodium carbonate is widely used in the manufacture of products such as glass, bread, water softeners and soaps. most sodium carbonate is produced industrially using
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