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If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Ans) There is a formula for this i.e [ (n 2- n 1 +1)
why in f-block element electronic configuration electrons does not enter in 5d orbital (except for La,Gd,Lu)
Ask question the density of 2 molal aqueous solution of NaOH is 1.1.gram/litre. Calculate the molality of solution?
Which of the following is not isoelectronic : (1) Na + (2) Mg 2+ (3) O 2- (4) Cl - Ans:(d)Cl -
Uses of methanol - Uses of monohydric alcohol (1) Methanol is extremely important industrial starting material for making formaldehyde, acetic acid and other chemicals. (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
Atomic spectroscopy: Atomic spectroscopy is the oldest instrumental method of elemental analysis. The origin of these methods dates back to the times of Bunsen and Kirchhoff i
Classification of proteins - biomolecules As per to the chemical composition, proteins are categorized into two classes 1. Simple proteins 2. Conjugated proteins
In addition, of hydrogen halides to the unsymmetrical alkens, Hydrogen is added to the carbon atom having of more number of hydrogen atoms and halide is added to the carbon atoms h
In naturally occuring neon, the fracional abundance of various isotopes is as follows: 20Ne =0.9051; 21Ne = 0.0027; 22Ne = 0.0922. What is the atomic mass of neon?
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