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Which of the following electronic configuration is not possible:
(1) 1s2 2s2
(2) 1s2 2s2 2p6
(3) [Ar]3d10 4s2 4p2
(4) 1s2 2s2 2p2 3s1
Ans: 1s2 2s2 2p2 3s1
For an electron if the uncertainty in velocity is Δ v , the uncertainty in its position( Δ x ) is given by: (1) hm/ 4 Π Δ b (2) 4 Π / hm Π v
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two oxides of a metal contain 27.6% and 30% oxygen. if the formula for the first oxide is m3o4 then what is the formula for the next oxide?
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what is the chemistry behind the reactions of confirmatory test of sulphide radical of dilute acid group.
The statements: (1) In filling a group of orbitals of equal energy, it is energetically preferable to assign electrons to empty orbitals rather than pair them into a particular o
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When β -particles are sent through a tin metal foil, most of them go straight through the foil as : (1)β -particles are much heavier than electrons (2) β -particles are po
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For liquids - Drying of Organic Substances Organic liquids are usually dried by keeping them over night in contact along with a dehydrating (desiccating) agent that does not re
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