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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 is the stability order of Li2, H2, B2 B.O of Li2 is 1 B.O of H2 is 1 B.O of B2 is also 1 so for stability order u need to see the no of electrons in antibonding orbitals mo
name the acid present in ant sting and give its chemical formula also give common method to get relief from the discomfort caused by ant sting
Derive Nerst equation for both anode and cathode.
Experiment on Archimedes' principle Solder a cycle valve to single half of a copper ball tap float. Load inside the other half with lead or lead shot unless the whole just flo
Glucose, (C 6 H 12 O 6 ) or Aldo-hexose Glucose is termed as dextrose as it happens in nature as the optically active dextrorotatory isomer. It is as well known as grape sugar
why ionisation energy of aluminium is greater then Ga?
Q. Analysis of water gave the following results H 2 SO 4 = 196Mg/L; MgSO 4 = 24Mg/L, CaSO 4 = 272Mg/L and NaCl = 25Mg/L. Water is to be supplied to the town of the popul
Illustrate objectives of heat treatment processes Heat treatment is normally adopted for the following: (i) To refine grain structure (ii) To improve machinability (ii
trivalent acid and basic radicals
How can we prove the stability of a space colony having a shape of truncated icosahedron? Solution) Because the shape has a sci-fi look to it and it would be very strong structur
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