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प्रश्न
Define the following term: Primitive unit cells
उत्तर
Primitive unit cells are defined as the unit cells in which the constituent particles are present only at the corner positions.
संबंधित प्रश्न
What is the formula of a compound in which the element Y forms ccp lattice and atoms of X occupy 1/3rd of tetrahedral voids?
Give the significance of a ‘lattice point’.
Name the parameters that characterize a unit cell.
Which of the following lattices has the highest packing efficiency (i) simple cubic (ii) body-centred cubic and (iii) hexagonal close-packed lattice?
What is meant by the term 'coordination number'?
In the complexes `[Fe(CN)_6]^(3-)` and `[pt(en) (H_2O)_2(NO_2 (Cl)^(2+)]``the respective oxidation numbers of central metal atoms are
1) +3 and +4
2) +6 and + 4
3) +6 and +3
4) +3 and + 3
i)
Consider the following cell reaction at 298 K: [3]
2Ag+ + Cd → 2Ag + Cd2+
The standard reduction potentials (E°) for Ag+/Ag and Cd2-/Cd are 0.80 V and -0.40 V respectively:
(1) Write the cell representation.
(2) What will be the emf of the cell if the concentration of Cd2+ is 0.1M and that of Ag+ is 0.2 M?
(3) Will the cell work spontaneously for the condition given in (2) above?
(ii)
What is a buffer solution? How is it prepared? Explain the buffer action of a basic buffer with a suitable example.
A solid compound XY has NaCl structure. if the radius of the cation is 100 pm, the radius of the anion will be
The yellow colour in NaCl crystal is due to ____________.
The lattice site in a pure crystal cannot be occupied by ______.
