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Electron occupies the available orbital singly before pairing in any one orbital occurs, it is:
(1) Pauli's exclusion principle
(2) Hund's Rule
(3) Heisenberg's principle
(4) Prout's hypothesis
Ans: Hund's Rule
The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom: (1) He + (n= 2) (2) Li 2+ ( n= 2) (3) Li 2
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Cross linked polymers : 1. These are polymers where monomers unit are crosslinked together to make a three dimensional network polymers. 2. These kind of polymers are hard,
Who modified Bohr's theory by introducing elliptical orbits for electron path: (1) Hund (2) Thomson (3) Rutherford (4) Sommerfield Ans: Sommerfield
The correct order of increasing energy of atomic orbitals is: (1) 5p (2) 5p (3) 4f (4) 5p Ans: 5p
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Because Nucleus is composed of protons and neutrons..
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