Who gave Law of Conservation of Mass
Law of conservation of mass was given by Lavoisier
Chemistry
Who verified dual nature of electrons
Dual nature of electrons was verified by Davission, Germer and Thomson
Who discovered Neutron?
Neutron was discovered by Chadwick
Who discovered Anode rays?
Anode rays was discovered by Goldstein
Who determined charge of the electron?
Charge of the electron is determined by Millikan
Who discovered Electron?
Electron is discovered by J.J Thomson
Valence Electrons
Electrons present in the outer most shell are called as Valence Electrons. They determine the chemical properties of the element.
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Valence electrons of charged atoms
We know that electrons are negatively charged. […]
Periodicity
Recurrence of properties of elements after regular intervals based on the atomic numbers is called as periodicity. The modern periodic table is based on groups and periods and each element in a particular period exhibits similar […]
Modern Periodic Law
The modern periodic law states that physical and chemical properties of elements are periodic function of their atomic numbers.
In 1913, Moseley proved that the most fundamental property of an element is its atomic number. […]
Electron Gain Enthalpy
Electron Gain Enthalpy(EGE) is the energy released when electron is added to an isolated gaseous atom.
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Factors affecting Electron Gain Enthalpy: Atom Size – In smaller atoms, incoming electrons are placed closed […]