Question

Explain covalent bond formation with example. Mention properties of covalent bond compound.

Answer 1

Covalent bond is a chemical bonding between two or more non- metals by sharing Valence shell electrons in order to attain nearest noble gas configuration. Eg formation of H2O molecular by covalent bonding
The properties of covalent bond compounds are
1)They have generally low melting and boiling point
2) generally they are poor conductor of heat and electricity
3)They are generally insoluble in inorganic solvents like water but soluble in organic solvent like petrol etc
4) These compounds are generally weak in nature

Answer 2

Covalent compounds are quite common, they are in the air we breathe, the gas we use to fuel our cars, the water we drink and even the food we eat. A covalent compound is made when two or more nonmetal atoms bond by sharing valence electrons. Let's take a closer look at what that definition means

Compounds

Have you ever played with two magnets? The positive end of one is attracted to the negative end of the other, exerting a pull. A similar thing happens during the formation of a covalent bond.

An atom is made of a positive nucleus and the negatively charged electrons that surround it. Imagine two chlorine atoms, each with seven valence electrons. Each of these chlorine atoms is only in need of one more valence electron to complete its outer shell. The atoms bond by sharing two electrons, forming a single bond. These electrons are concentrated in between the two chlorine atoms, locked into position by magnetic attraction. The negative electrons are attracted to the positively charged nucleus of each atom, keeping the atoms from separating.

The bonded electrons between two chlorine atoms are shared evenly - each atom exerts the same pull on the shared electrons. This isn't always the case however, as some atoms are more electronegative than others.