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Correct set of four quantum numbers for valence electron of rubidium (Z = 37) is:
(1) 5,0,0,+1/2
(2) 5, 1,0,+1/2
(3) 5,1,1,+1/2
(4) 6,0,0,+1/2
Ans: 5,0,0,+1/2
Maximum number of electrons present in N shell is: (1) 18 (2) 32 (3) 2 (4) 8 Ans: 32
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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.
A cylinder is equipped with a frictionless piston with an inner diameter of 5 cm and a mass of 3 kg. A 27 kg weight rests on the piston. One mole of helium at 25 o C fills the cyl
Q. Calculate standard state enthalpy of the substance? Ans. To determine ΔH o f for calcium carbonate, calcium and carbon are burned in a calorimeter. Noti
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