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Sia ? 4 years, 6 months ago
A number of electronegativity scales are present. These include Pauling scale, Milliken-Jaffe scale, Allred Kochow scale etc. Out of these scales, Pauling scale is usually used in which fluorine (the most electronegative element) was arbitrarily assigned a value of 4.0.
Electron gain enthalpy is defined as the enthalpy change when a neutral gaseous atom takes up an extra electron to form an anion.
Electron gain enthalpy is the tendency of an isolated gaseous atom to accept an additional electron to form a negative ion. Electronegativity is the tendency of the atom of an element in a chemical compound to attract a shared pair of electrons towards it in a covalent bond.
Electronegativity is a qualitative measure. It is not a measurable quantity.
However, electron gain enthalpy is a quantitative measure. It is a measurable quantity.</div>
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Payal Singh 8 years, 4 months ago
There are five known phases, or states, of matter: solids, liquids, gases, plasma and Bose-Einstein condensates. The main difference in the structures of each state is in the densities of the particles.
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Payal Singh 8 years, 4 months ago
The limiting reagent (or limiting reactant) in a chemical reaction is the substance that is totally consumed when the chemical reaction is complete. The amount of product formed is limited by this reagent, since the reaction cannot continue without it.
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Raveesh Yadav 8 years, 4 months ago
According to Aufbau principal. in the increasing order of its energy lelel
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Abhinav Agarwal 8 years, 4 months ago
Generally stable or inert element has B.O=0 like He,Ne.
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Arun Soni 8 years, 4 months ago
1s and 2s orbitals are spherical in nature and can accommodate only two electrons.
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Isoelectronic species refers to the species which have same number of electrons. For e.g. CO and N2 are isoelectronic as both have same number of electrons i.e. 14.
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Neha Yadav 8 years, 4 months ago
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