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Which of the following compounds are covalent:
(1) H2
(2) CaO
(3) KCL
(4) Na2S
Ans: H2
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Give example of Allotropy The element carbon has two common allotropes: diamond, where the carbon atoms are bonded together in a tetrahedral lattice arrangement, and graphite
Cis-1-ethyl-3-methylcyclohexane can be isolated in optically active form.
Two solutions are prepared using the same solute: Solution A: 0.27g of the solute dissolves in 27.4g of t-butanol. Solution B: 0.23g of the solute dissolves in 24.8g cyclohexane. W
what is definaion of leveling effect
The electronic configuration of four elements L,Q, P, and R are given in brackets: L ( 1s 2 , 2s 2 , 2p 4 ) Q (1s 2 , 2s 2 , 2p 6 , 3s 2 ,3p 5 ) P ( 1s 2 , 2s 2 2p
what is the stability order of Li2, H2, B2 B.O of Li2 is 1 B.O of H2 is 1 B.O of B2 is also 1 so for stability order u need to see the no of electrons in antibonding orbitals mo
Quantitative analysis by Flame Photometry?
Uncertainty in position of a 0.25 g particle is 10 -5 . Uncertainty of velocity ( h = 6.6 x 10 -34 Js) is: (1) 1.2 x 10 34 (2) 2.1 x 10 -29 (3) 1.6 x 1
why carbonate salts are insoluble in water
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