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Pauli's exclusion principle states that : (1) Nucleus of an atom contains no negative charge (2) Electrons move in circular orbits around the nucleus (3) Electrons oc
what is the relationship between the rate of cooling and the size of crystals?
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Q. Determine Molecular Mass of Atoms Ans: 6.02 x 10 23 is a really big number. It would be hard to count that many of any object. That's one of the reasons we count atoms b
Who modified Bohr's theory by introducing elliptical orbits for electron path: (1) Hund (2) Thomson (3) Rutherford (4) Sommerfield Ans: Sommerfield
why is electron gain enthalpy of oxygen greater than sulphur?
What is Frenkel defect A pair of one cation and one anion can be missing from an ionic crystal as shown in the following figure. Such a pair of vacant sites is called Schottky
The set of quantum numbers not applicable for an electron in an atom is: (1) n= 1, l=1, m 1 = 1, m s = +1/2 (2) n= 1, l=0, m 1 = 0, m s = +1/2 (3) n= 1, l=0 m
Amines - Nitrogen Containing Compounds 1. Amines are observed like derivatives of ammonia where one, two or all three hydrogen atoms are changed by alkyl or aryl group. 2. A
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