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Which of the sub-shell is circular: (1) 4s (2) 4f (3) 4p (4) 4d Ans: 4s
Explain the statement "Water has bent geometry" Water has bent geometry; that is, the H-O-H bond angle is approximately tetrahedral. Repulsion among the lone pairs and the bond
why we use lithium in corey house reaction
how we synthesis picric acid why it required 1 hour for the reaction with HNO3,H2SO4 and show the mechanism of picric acid and uses of picric acid. and what is the role of HNO3,H2S
Evidence in favor of Kekule's structure 1. Benzene combines along with 3 molecules of hydrogen or three molecules of chlorine. It also collides along with 3 atoms of ozone to
(a) Co-ordination compound A co-ordination compound contains a central metal atom or cation which is surrounded by a suitable number of anions or neutral molecules and usually re
The elements of first transition series from variety of oxides of different oxidation states having general formulae MO, M 2 O 3 , M 3 O 6 , MO 2 , MO 3 . These oxides are gene
Which of the following has highest melting point: (1) BaCl 2 (2) MgCl 2 (3) Cacl 2
what are the chemical reactionsof the p-block elements
The maximum number of electrons that can be accommodated in the M th shell is: (1) 2 (2) 8 (3) 18 (4) 32 Ans: 18
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