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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.
Molecule in itself is electrically stable so it cant act as ligand So that it can acts as the negative and pasitive ligand.
x(2x^-1/4)^4
Reference solution: A proper reference solution contains color reagent plus sample buffer. The difference between the reference and a sample is that the concentration of
For the dumb-bell shaped orbital, the value of l is: (1) 3 (2) 1 (3) 0 (4) 2 Ans: 1
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The band model of solids is an extended of the molecular orbital (MO) method. The overlap of atomic orbitals in an extended solid produces rise to continuous bands of electronic en
what are the pysical propities of iodofrom
Q. Explain about Electron-Dot Structures? Write an electron-dot structure for a impartial atom of arsenic an element used in semiconductor materials because of its electron con
Caesiurn chloride crystallises as a body centred cubic lattice and has a density of 4.0 g cm -3 . Calculate the length of the edge of the unit cell of caesium chloride crystal.
Fe(atomic number = 26) atom has the electronic arrangement: (1) 2, 8, 8, 8 (2) 2, 8, 16 (3) 2, 8,14, 2 (4) 2, 8, 12, 4 Ans: 2, 8,14, 2
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