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Which of the following is isoelectronic with carbon atom:
(1) Na+
(2) Al+3
(3) O2-
(4)N+
Ans: N+
preparation of cycloalkanes
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why we consider carbon as standared for atomic mass unit
define borazine
define
Electronic configuration of Sc 21 is: (1) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 4s 2 , 3d 1 (2) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 4s 1 , 3d 2 (3)1
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