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The wave nature of an electron was first given by: (1) De-Broglie (2)Heisenberg (3)Mosley (4)Sommerfield Ans: De-Broglie
Just like lithium and beryllium in Groups Land 2, boron also shows anomalous behaviour. In general, the boron chemistry resembles that of silicon (occupying a diagonal position in
how to calculate equivalent weight of phenol
The atomic number of an element is always equal to: (1)Atomic weight divided by 2 (2)Number of neutrons in the nucleus (3)Weight of the nucleus (4)Electrical ch
Which processes is used to harden a steel? Quenching process is used to harden the steel
Types of Substituents which Produce Directive Effect There are two kinds of substituents which generate directive effect are, (i) Those that direct the incoming group to ort
drawbacks of bohr thory
Microcosmic Salt Bead Test Microcosmic salt, Na(NH 4 )HPO 4 .4H 2 O is as well used to identify specific cations just as borax. While microcosmic salt is burned in a loop of pl
Q. Study of Elements of group 16? We shall discuss Group 16 elements, viz., oxygen, sulphur, selenium, tellurium and polonium. These elements are called chalcogens or the ore f
Determine the rate constant from the concentration-time dependence: Time (s) [Reactant](M) 0.0 0.0451 2.0 0.0421 5.0 0.0376 9.0 0.0316 15 0.0226 Use SI units, that is, seconds fo
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