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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
In any atom which sub-shell will have the highest energy in the following : (1) 3p (2) 3d (3) 4s (4) 3s Ans: 3d
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
what is the mechanism of acyl chloride reaction with alcohol and why does it react in this way ?
diagonal relationship of Be and Al
If the velocity of hydrogen molecule is 5x 10 4 cm sec -1 then its de-Broglie wavelength is: (1) 2 Å (2) 4 Å (3) 8 Å (4)100 Å Ans: 4 Å
Nitrogenous base: These are heterocyclic organic compound that comprise two or more nitrogen atoms in ring skeleton. These are called bases as the lone pairs of electrons on th
Distinguish between dry corrosion and wet corrosion. Write brief notes on dissimilar types of liquid crystals.
how electrode potential through nernst equation can be determind/
Types of plasma sources: The three types of plasma sources and the sources for their power are as given below. P lasma Source S o u r c e of p
introduction to esters ,preparation, proprties, and their uses in daily life
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