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The atomic orbitals are progressively filled in order of increasing energy. This principle is called as:
(1) Hund's rule
(2)Aufbau principle
(3) Exclusion principle
(4) de-Broglie rule
Ans: Aufbau principle
The correct electronic configuration of Ti(Z= 22) atom is: (1) 1s 2 , 2s 2 , 2p 6 , 3p 6 , 4s 2 , 3d 2 , (2) 1s 2, 2s 2 , 2p 6 , 3p 6 , , 3d 4 , (3) 1s 2 , 2s
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