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Q. Explain about Preparation of diborane? Diborane can be prepared in almost quantitative yields by the reduction of boron Tricloride etherate (BF 3 , 0Et 2 ) with lithium alum
what/s this test
Q. Show the chemical properties of Aluminium? Aluminium has a very high affinity for oxygen; this is reflected in high exothermic heat of formation of Al 2 0 3 (-1676 kJ mol -
Q. Illustrate Uses of f-block element? Lanthanides and many of their complexes have received wide industrial applications. For example, europium derivatives are used as phospho
Q. Magnetic Properties of f-block element? You have learnt in the preceding unit-that paramagnetism is related with the presence of unpaired electrons in a substance. The actin
what is nobel gasses
Q. Determine Equilibrium Constants for Acid and base? Ans. The pH scale of acidity is a simple and convenient way to state the acidity of a solution. The
Show that wavefunction ψ1(x) = (2/L) 1/2 sin(πx/L) of a particle in a box is an eigenfunction of the operator d 2 /dx 2 and also calculate the corresponding eigenvalue.
20ml of water sample requires 15ml of 0.1mg/l sodium carbonate using phenolphthalein indicator. state the type of acidity and calculate the acidity
The tris(monothiocarbamato)iron(III)complex shown to the right undergoes conversion from low to high spin state with an increase in temperature. This can be monitored by measurin
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