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Till 20elememts write the no of electrons in outermost shell.if less than 4 then this is the valency otherwise subtract from 8
some simple live chemistry projects
The covalency of nitrogen in HNO 3 is: (1) 0 (2) 3 (3) 4 (4) 5 Ans: 5
Aufbau principle is obeyed in which of the following electronic configurations: (1) 1s 2 2s 2 2p 6 (2) 1s 2 3p 6 3s 2 (3) 1s 2 3s 2 3p 6
A mixture is prepared by adding 25.0 mL of 0.185 M Na3PO4 to 34.0 mL of 0.140 M Ca(NO3)2. (a) What mass, in grams, of calcium phosphate will be formed? What will be the concentrati
Synthesis of DDT and BHC
Q. Importance of Moisture content of the flour? Moisture content of the flour is an important parameter and does not remain the same throughout the period of storage. As the fo
classification
What is +M and -M effect?
Isoelectronic species are: (1) K + Cl - (2) Na + Cl - (3) Na Ar (4) Na + Ar Ans: K + Cl -
#between p-amino aniline &p-methyl aniline which is more basic?
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