Electron
An electron is defined as a subatomic particle which carries one unit of electrical charge (1.602 x 10 - 1 9 C) and has a mass (9.1 x10 - 2 8 g). The mass of an electron is almost negligible, being 1/1837 t h the mass of an atom of hydrogen. The charge of an electr..
Discovery of Electrons
In 1885, Sir William Crookes carried out a series of investigations into the behaviour of metals heated in a vacuum. The experiment of Crookes and others showed that a heated cathode produced a stream of radiation, which could cause gases at low pressure to glow and which, make..
Electronic Nature of Metals
Electronic Nature of Metals - Metals are the elements which form positive ions by losing electrons, while non-metals always gain electrons. All metals (except hydrogen) form positive ions by loosing electrons. Meta..
Electronic Nature of Metals
Metals are the elements which form positive ions by losing electrons, while non-metals always gain electrons. All metals (except hydrogen) form positive ions by loosing electrons. Metals have 1 to 3 electrons in t..
Electronic configurations
All the alkali metals have one electron in their outermost 's' orbitals preceded by the noble gas configuration. Thus, the general configuration of alkali metals may be written as [Noble gas] ns 1 where 'n' represents the valence shell. The electronic confi..
By electronic protection
Iron, which has to be continuously remain in contact with water, as in the body of ships, can be given a kind of electronic protection. Pieces of a more reactive metal, such as magnesium are attached to that part of the ship that remains under water. When in contact with water,..
Electronic configurations
Group 2 elements are called alkaline Earth metals. These elements have two electrons in the valence shell of their atoms, preceded by the noble gas configuration. Their general configuration is written as [Noble gas] ns 2 where 'n' represents the valence shel..
Electron sea model for metallic bonding
To account for the bonding in metals, Lorentz proposed a model known as electron gas model or electron sea model. This model is based on the following characteristic properties of metals..
Electronic Nature of Metals and Non-metals
Electronic Nature of Metals and Non-metals - We are familiar with the fact that the atoms of all elements, except noble gases, have an incomplete outermost shell. Consequently, most elements are reactive and they try to achieve the stability of the noble or inert gases..
Electronic Nature of Metals and Non-metals
We are familiar with the fact that the atoms of all elements, except noble gases, have an incomplete outermost shel..
Result
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