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Pauli's exclusion principle states that:
(1) Two electrons in the same atom can have the same energy
(2) Two electrons in the same atom cannot have the same spin
(3) The electrons tend to occupy different orbitals as far as possible
(4) Electrons tend to occupy lower energy orbitals preferentially
(5) None of the above
Ans: None of the above
The positive charge of an atom is: (1) Spread all over the atom (2) Distributed around the nucleus (3)Concentrated at the nucleus (4) All of these Ans: Concentr
A sub-shell l= 2 can take how many electrons: (1) 3 (2) 10 (3) 5 (4) 6 Ans: 10
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