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Which of the following sets of quantum numbers is not allowed : (1) n=1, l=0,m=0 s= +1/2 (2) n=1, l=1,m=0 s= -1/2 (3) n=2, l=1,m=1 s= +1/2
Q. A sample of water analysis was found to contain temporary magnesium hardness 25 mg/L. Permanent magnesium chloride hardness 15 mg/L and permanent calcium sulphate hardness 20
Q. Show the Multiple covalent bonds between electron pairs? Ans. Two atoms may share one electron pair, two electron pairs or three electron pairs. The bonds formed in th
What is the electronic configuration of Cu 2+ (Z= 29) of least position: (1) [Ar]4s 1 3d 8 (2) [Ar]4s 2 , 3d 10 4p 1 (3) [Ar]4s 1 3d 10
Comment on the validity of the following statements, giving reasons: (a) Thermodynamically an exothermic reaction is sometimes not spontaneous. (b) The entropy of steam is mo
The phosphate of a metal has the formula MPO4 .The formula of its nitrate will be: (1) MNO 3 (2) M 2 (NO 3 ) 2
How viscosity and surface tension help in ascertaining criteria of purity for organic compounds
Heat Conductivity When considering the design of houses, the heat conductivity by walls, roofs, and the floor plays an significant role. The heat conductivities (λ) of some bui
Q. Explain Combined Gas Law? Ans. The combined gas law combines Boyle's law and Charles' law. The combined gas law describes situations where a gas undergoes simul
Given that dH for the reaction is -92.2 kJ mol-1, which is larger, the total bond dissociation energy of the reactants or the total bond dissociation energy of the products?
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