Covalent Radius
One half of the distance between nuclei of two covalently bonded atoms of same element in a molecule is called as covalent radius. Covalent radius is atomic radius of an element whose electrons are in […]
Concepts
Atomic Radius
Atomic Radius is the distance from centre of the nucleus to the outermost shell of electrons.
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Trends in Periodic Table
Atomic radius decreases across a period because electrons are added to the […]
Surface Tension
Force acting perpendicular to the tangential line of surface per unit length
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Points To Remember: Surface tension is a Scalar quantity It is temperature sensitive Unit of surface tension is N/m Dimension […]
Melting Point
Temperature at which solid converts into liquid at atmospheric pressure.
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Points to Remember: If the compound melts over a very narrow range, it can usually be assumed that the compound is relatively […]
Boiling Point
Temperature at which vapour pressure of liquid is equal to atmospheric pressure.
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Points to Remember: Point at which liquid changes to steam. Vander walls forces between molecules break because of which liquid […]
Critical Volume
Volume occupied by one mole of gas at critical temperature and pressure
Critical Pressure
Minimum pressure required to liquify the gas at critical temperature.
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Points to Remember:
The combination of critical temperature and critical pressure is called the critical point of a substance.
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Critical Temperature
Temperature above which gas cannot be liquefied by pressure alone.
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Points to Remember:
Gases can be converted to liquids by compressing the gas at a suitable temperature. The critical temperature of a […]
