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Determine about the Antiferromagnetic materials
Antiferromagnetic materials are materials in which almost all magnetic dipoles are linked up antiparallel to each other. Its susceptibility increases with increase in temperature, until a critical temperature is reached, beyond which it becomes paramagnetic. A number of the materials are MnF2, MnO2, MnS. These too are rarely used in electrical application.
The nitrogen atom has 7 protons and 7 electrons, the nitride ion (N 3 -) will have: (1) 7 protons and 10 electrons (2) 4 protons and 7 electrons (3) 4 protons and 10 e
Addition catalysed by base - Aldehydes and Ketones In the existence of a base one equivalent of an alcohol reacts along with only one equivalent of the carbonyl compound. The p
if the bond length in chlorine molecule is 1.98 angstrom and bond length in H-CL molecule is 1.76 angstrom calculate the covalent radius of hydrogen
how to do nomenclature in organic chemistry
Wurtz reaction and Allylic bromination by N-Bromosuccinimide (A) Wurtz reaction - Ethyl bromide on treatment along with metallic sodium forms butane, ethane and ethylene by inc
Conformation energy profile for butane Conformation energy profile for butane C2-C3 bond rotation
The energy that opposes dissolution of a solvent is: (1) Hydration energy (2) Lattice energy (3) Internal energy (4) Bond energy Ans: B
Water pressure is the same in all directions Punch holes around the base of a tall tin can with a nail. Wrap the holes as above with a strip of tape. Fill the can with water an
What parts of molecular forces are expected to exist between the species in any three of the following pairs constituting mixtures? (a) He and N2 (b) Cl2 and NO- 3 (c) NH
Q. Hybridisation and the magnetic properties of the complex? Pauling showed that there is a direct correlation between the type of hybridisation and the magnetic properties of
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