Write the names and symbols of two very reactive metals belonging to group 1 of the periodic table. Explain by drawing electronic structure, how either one of the two metals reacts with a halogen. With which name is the bond formed between these elements known and what is the class of the compound so formed known?
State any four physical properties of such compounds.

Sodium (Na) and Potassium (K) are two very reactive metals belonging to group 1 of the periodic table.

Sodium (Na) is a metal. So, sodium readily reacts with a halogen like chlorine (Cl) to form an ionic chloride called sodium chloride.
The diagram is given below:
Halogens are the non-metals that belong to group 17 of the periodic table.
Metals are electropositive and have a tendency to lose electrons while non-metals are electronegative and have a tendency to accept electrons. Therefore, when a metal reacts with a non-metal, a transfer of electrons takes place, resulting in the formation of an ionic bond.
The resulting compound is called an ionic compound.

Physical Properties of Ionic Compounds are given below:
1. Ionic compounds are generally solids.
2. They have high melting and boiling points.
3. They are generally soluble in water.
4. They conduct electricity in the molten state.

Updated on: 10-Oct-2022

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