Chemistry

An atom or group of atoms which bears charge and behaves as single unit during chemical reaction is called radical. […]

Valency: Valency is the combining capacity of an element with other elements. In electronic concept, valency is the number of

Symbol: Symbol is the abbreviation which is given to represent full name for elements. Eg. Hydrogen – H Sodium –

Equivalent weight of Element: Equivalent weight of an element is defined as the number of parts by weight of that

In this method small amount of weighed volatile liquid is converted into vapour. This vapour is collected and its volume

In 1811 Amadeo Avogadro proposed his hypothesis. According to his hypothesis under the similar condition of temperature and pressure equal

Molecular Weight is the number which shows how many times a molecule of a substance is heavier than 1/12th part

STP or NTP Pressure = 760 mmHg = 1 atm T = 273K = 0°c 100ml = 1000cc = 1

According to Dulong and Petit’s Law, the product of atomic weight and specific heat equals to 6.4   (Approx.). This