Discovery of Electron

Dual behaviour of matter proposed by de Broglie led to the discovery of electron microscope often used for the highly magnefied images of biological molecules and other type of material. If the velocity of the electron in this microcope is 1.6xx10^(6) m s^(-1) . Calculate de Broglie wavelength associated with this electron.

Hyperconjugation is defined as No bond resonance. The concept of hyperconjugation arose from the discovery of electron releasing pattern for alkyl groups. It involves sigma electrons of C-H bond. Greater the number of C-H bond ( alpha -hydrogen atom w.r.t. double bond) more will be hyperconjugative structures, more will be stability Heat of hydrogenation of alkene are affected by hyperconjugative effects. Which of the following is incorrect hyperconjugative structure?

Discovery Of Neutrons is by ?

Discovery Of Protons|Properties Of Anode Rays|Discovery Of Neutrons (By Chadwick)|Atomic Number & Mass Number|Summary

Discovery of 'nylon' is associated with

The discovery of the elctrons was a consequence of study of the

Assertion: Discovery of the first antibiotic was a chance discovery. Reason: Penicillin was the first antibiotic.

$ Seredipidty refers to discoveries as a result of thorough research. ! Discovery of Penicilin was not by serendipidty.

The Discovery Of Plant Growth Regulators