20 chemical compounds and their chemical formula..in table

Introduction - Sodium belongs to Group I in the periodic table. This group is otherwise known as the alkali metals group. Since the atomic number of sodium is 11, its electronic configuration is 2,8,1. Sodium easily loses the lone electron to attain the stable configuration of neon. There..

Sodium belongs to Group I in the periodic table. This group is otherwise known as the alkali metals group. Since the atomic number of sodium is 11, its electronic configuration is 2,8,1. Sodium easily loses the lone electron to attain the stable configuration of neon. Therefore alka..

Differences in chemical properties Metals have 1, 2 or 3 electrons in the outermost shell Non-metals have 4 to 8 electrons in the outermost shell Loses valence electrons and forms cations Gain or share valence electrons and form anions Electropositive Electronegative ..

(8 x 2) on the reactants side as well. Now the only unbalanced one is Chlorine. On the left hand side, there are 16 Cl. On the right hand side, firstly, there are 2 Cl in 2 KCl + 4 Cl in 2 MnCl 2 , making total of 6(2 + 4). Subsequently 10 more Cl atoms are to be accounted for. So place 5 in front ..

Mixtures Compounds A mixture c b spdrated into its constituents by physical processes (filtration, evaporation, sublimation, distillation) A compound cannot be separated into its constituents by physical processes. It can be separated by chemical means. ..

Distinction Between Compound and Mixture - Characteristics Compounds Mixtures Composition Made up of atoms of elements in a fixed proportion Made up of elements, or compounds, or both in any proportion Nature Particles are of the same kind Particles are of different ki..

Gases Percentage of air dissolved in water Composition of air in atmosphere Nitrogen 65% 79.00% Oxygen 34% 20.90% Carbon di oxide 1% 0.03% To show the presence of air in water, the following experiment can be performed. Set up the apparatus as shown in the figur..

and valence electrons of some atoms Element Atomic Number Electronic Configuration Valence Electrons Sodium 11 2,8,1 1 Carbon 6 2,4 4 Oxygen 8 2,6 6 Calcium 20 2,8,8,2 2 Valence electrons help in bonding between atoms in two ways: a) By transferri..

Sodium belongs to Group I in the periodic table. This group is otherwise known as the alkali metals group. Since the atomic number of sodium is 11, its electronic configuration is 2,8,1. Sodium easily loses the lone electron to attain the stable configuration of neon. Therefore alkali met..

Noble Gases - The amount of all the noble gases put together (Helium, Neon, Argon, Krypton, Xenon and radon) is extremely low in air. These form only 0.94% of the volume of air and as such can be treated as negligible. These gases were found chemically inert (i.e. did not mix with other e..