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The number of unpaired electrons in 1s2 2s2 2p4 is:
(1) 4
(2) 2
(3) 0
(4) 1
Ans: 2
who it whould be make
Q. Write short note on units of hardness and their relationship. Sol. Units of hardness and their relationship. (1) Parts Per million (ppm): It is defined as t
Thermosetting polymers - Classification of polymers These are the polymers which go through permanent modification on heating. They get firm and infusible on heating. They are
React Benzil with 60% NaOH
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The charge of an electron is -1.6 x10 -19 C. The value of free charge on Li + ion will be: (1) 3.6x 10 -19 c (2) 1x 10 -19 c (3) 1.6 x 10 -19
K c is the equilibrium constants when the concentrations are expressed in moles/litre K c = Product of concentrate ions of products / product of concentrate ions of reactants
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how do i make a first class in chemistry, secondly in nigeria chemistry is based on too much theory. how do i make it in this case?
how to draw 3D stereoisomers for a compound?
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