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Alkanes have single bond, but why are they less reactive as compared to alkenes or alkynes which have respectively double or triple bonds ?
Alkanes have only single sigma bond which produces them stable and permits delocalisation of electrons and as hyperconjugation, but alkenes and alkynes have one or two additional pie bonds which restricts the above mentioned phenomena. As a result they tend to break their pie bond in order to achieve a one sigma bond and a stable structure that may permits resonance.
The number of unpaired electrons in a chromic ion Cr 3+ (atomic number = 24) is: (1) 6 (2) 4 (3) 3 (4) 1 Ans: 3
2 thermometers, A and B, are wrapped in pieces of gauze. The gauze around thermometer A is moistened with water and the gauze around thermometer B is moistened with Ether(a volatil
Ask quThe maximum number of electrons which each sub-shell can occupy is 2(2l+1)
Synthetic Rubber - Classification of Rubber The synthetic rubber is acquired by polymerising specific organic compounds that may have properties identical to rubber and some w
Ionic Radii The experimentally calculated anion-cation distances in highly ionic solids have to be interpreted on the assumption that each and every ion has a nearly fixed
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The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is: (1) 17 (2) 37 (3)2 (4)38 Ans: 17
GFAAS is often necessary to add modifiers in order to increase the sensitivity of the techniques.Giving example explain the principles used in the selection of such modifiers,be ca
why lanthanide series is called lanthanide?
Q. Example to show scientific notation? Solve the following problem. 2.45 *10 14 kg + 4.00 * 10 12 kg First articulate both quantities to the same power of ten. Either
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