10th Class- Metals and Non-Metals Part- 2 | Chemistry Notes Info - Your Chemistry Tutor provide notes for Classes, BSc, MSc, Chemistry Test

10th Class- Metals and Non-Metals Part- 2

10th Class Chapter- Metals and Non-Metals

Reactivity Series of Metals

                                              Reactivity series is the series in which metals are arranged as per order of decreasing activity. This reactivity series is developed after performing so many displacement experiments. This series is also called as activity series.

K
Pottasium
More Reactive





Reactivity
Decreases
when we move
Top to Bottom









Least Reactive
Na
Sodium
Ca
Calcium
Mg
Magnesium
Al
Aluminium
Zn
Zinc
Fe
Iron
Pb
Lead
H
Hydrogen
Cu
Copper
Hg
Mercury
Ag
Silver
Au
gold

How Metals react with Non-metals

                                                          As we know every element has tendency to achieve completely filled valence shell to get electronic configuration of nearby noble gas, for example a metal say sodium (Na) react with non-metal chlorine (Cl) to get complete valence shell so Na loose one electron from its outermost shell which is taken-up by chlorine (Cl), as a result they both have completely filled valence shell. In this process sodium become +vely charged and chlorine –vely charged and these charge attract each other to form NaCl.
       Na (2,8,1) --------> Na+ (2,8) + e-
       Where,
                  Na+ is sodium cation
       Cl (2,8,7) + e- ----------> Cl-
       Where,
                  Cl- is chlorine anion
Formation of Sodium Chloride
       Na+  + Cl- -----------> NaCl

Properties of Ionic Compounds

                                                Ionic Compounds also called Electrovalent Compounds and their properties are described below-

1.    Physical Nature of Ionic Compounds

Ionic compounds are solid and hard due to strong force of attraction between +ve and –ve ions. Ionic compounds are also brittle.

2.    Melting and Boiling Points of Ionic Compounds

Ionic Compounds have high M.P. and B.P. as large amount of energy is needed to breakup ionic bonds.

3.    Solubility of Ionic Compounds

Ionic compounds are soluble in polar solvents like water and insoluble in non-polar solvents like ether, kerosene etc.

4.    Electric Conductivity of Ionic Compounds

Ionic compounds conduct electricity in aqueous and molten state as ions moves freely but do not conduct electricity in solid state.

10th Class- Metals and Non-Metals Part- 3
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