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Which of the following pairs of species has same electronic configuration:
(1) Zn2 and Ni2+
(2) Co+3 and Ni4
(3) Co2+ and Ni2+
(4) TI4+ and V3+
Ans: (b)Co+3 and Ni4
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calculate the ratio of the fundamental frequency of HI and DI
Styrene rubber (GR-S or Buna-S or SBR or Ameripol): Styrene butadiene rubber (SBR) is prepared by the copolymerization of butadiene (75%) and styrene (25%) in an emulsion styrene
As electron moves away from the nucleus, its potential energy: (1) Increases (2) Decreases (3) Remains constant (4) None of these Ans: Increases
diagram
why ionisation energy of aluminium is greater then Ga?
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Use the VSEPR model to predict approximate molecular geometries and electron-domain for the following species. (a) XeF 2 , (b) NH3Cl + , (c) BrO2 -
If n+l= 6 , then total possible number of subshells would be: (1) 3 (2) 4 (3) 2 (4) 5 Ans: 3
principles of GCMS
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