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During a flame test why is calcium''s flame not persistent, while that of strontium is?
Ans) Because it does not have many ions as compared to the Strontium. It is the ions which produce color.
#between p-amino aniline &p-methyl aniline which is more basic?
maximum no of unpaired electrons a)mn2+ b)ti3+ c)v3+ d)fe2+
Q. Describe about groups or families in periodic table? Every element may be represented by a one or two letter symbol. In the middle of nineteenth century a Russian chemist Dm
what are chemical formulae and equation
Sources of aliphatic hydrocarbon Mineral or crude oil, petroleum is the dark colour oily liquid along with offensive odour found at several depths in many regions below the sur
electrophilic substitution in phenol takes place
Halogen Containing Compounds Compounds that are derived from hydrocarbons by the replacement of one or more than one hydrogen atoms by the corresponding number of halogen atoms
In ion estimation why we have to change the oxidation state of the Fe+3 ion. Ans) Because if iron is in +3 oxidation state it will be morestable then we get preferable product. s
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
How standard solutions are prepared in industries
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