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Which of the following electronic configuration is not possible according to Hund's rule:
(1) 1s2 2s2
(2) 1s2 2s1
(3) 1s2 2s2 2p1x 2py1y 2p1x
(4) 1s2 2s2 2p2x
(5) 1s2 2s2 2p2x 2p1y 2p1z
Ans: 1s2 2s2 2p2x
For n= 3 energy level, the number of possible orbitals (all kinds) are: (1) 1 (2) 3 (3) 4 (4) 9 Ans: 9
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A cubic solid is made of two elements X and Y. Atoms V are at the corners of the cube and X at the body centre. What is the formula of the compound?
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Formation of cyclo alkanes
Explain classification of arches according to shapes raw a neat sketch of Flemish bond (1 brick wall and 1.5 brick wall thickness ).
Q. Show the Basic Definitions of coordination compounds? Some of the terms which we use in connection with coordination compounds carry specific meaning and thus form a kind of
What kind of relation is there between them and the force constants of vibration that you have calculated? The enthalpies of vaporization of carbon and silicon are 717 kJmol -1
What are the various types of point defects? How are they caused? (i) Vacancies: This refers to a missing atom or a vacant atomic site because of absence of a matri
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