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Teflon - Halogen Derivatives
1. Teflon is plastic such as substance produced by the polymerisation of tetrafluoroethylene (CF2 = CF2).
2. Tetrafluoroethylene is made while chloroform is treated along with antimony trifluoride and hydrofluoric acid.
3. On polymerisation tetrafluoroethylene makes a plastic-like material that is called teflon.
4. Chemically Teflon is inert molecules. It is not influenced by hard acids and even by boiling aqua-regia. It is invariable at high temperatures. It is, thus, required for electrical insulation, creation of gasket materials and non-sticking frying pans.
Nitrenes - Organic Chemistry (1) The nitrogen analogous of carbenes are termed as nitrenes. (2) There is probability of two spin structure for nitrenes depending upon whethe
What is Frenkel defect A pair of one cation and one anion can be missing from an ionic crystal as shown in the following figure. Such a pair of vacant sites is called Schottky
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In neutral atom, which particles are equivalent: (1) P + e + (2 ) e - e + (3) e -, P + (
Q. Crystal Field Splitting in Octahedral Complexes? Let us consider an octahedral complex, ML6, where M is a metal ion and L stands for a ligand. The total charge on the comple
The maximum number of electrons present in an orbit l= 3 , is: (1) 6 (2) 8 (3) 10 (4) 14 Ans: 14
why glass electrode is called indicator electrode
a sample of CaCo3 and MgCo3 weighing 192g is ignited to constanr weight of 104 gm . what is the composition of mixture ?
THermodynamic free enrgy is the amount of work a thermodynamic system can perform. The concept is useful in the thermodynamics of chemical or thermal processes in engineering and
Preparation of benzaldehyde by etard''s reaction
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