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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.
Name: Cyclohexane Formula: C6H12 Molar mass: 84.16 g/mol Density: 779.00 kg/m³ As it''s density is less than that of water, it floats on water rather than sinking.
What is Frenkel defect A pair of one cation and one anion can be missing from an ionic crystal as shown in the following figure. Such a pair of vacant sites is called Schottky
CH3CH=CH-CHO
The reluctances of ns electrons in the participation of bond formation is known as inert pair effect
problems in chugaev elimination
What are the major poisnous gases released during burning of the plastic substances????? Ans) It is high time that we start taking concrete steps in order to prevent pollution or
Initially 5 mol of an ideal gas with Cv,m=12.5 J K^-1 mol^-1 are at a volume of 5 dm^3 and a temperature of 300K. If the gas is heated to 373 K and the volume changed to 10 dm^3, w
how many laws of crystallography?
Applications of radiometric titration in pharmaceutical industry #
Explain significance of orthogonality rule
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