Question

What is the difference between an ionic and a covelant bond ?

Answer 1

A bond is formed when two atoms have less than 8 electrons in their valency and to satisfy octet config. , they either gain, lose or share electrons.

Now, if for example:

1. NaCl is formed when Na loses an electron(the extra electron) and forms a cation. Now it has only 8 in its valence shell.

2. Cl gains this electron and becomes an anion. Now it has 7+ 1electron from Na. That gives 8 electrons in valence shell.

These two ions being attracted by the electrostatic forces of attraction form a bond. This is called an Ionic or electrovalent bond.

Covalent bond is formed when electrons are shared by two atoms.

Here, For example Hydrogen diatomic molecule. The two hydrogen atoms are bonded by sharing of one electron each.

One hydrogen has 1 electron. These two atoms come together and share their electrons. Now the two electrons (one pair) lie in between the two hydrogen atoms.

Answer 2

Answer:

Explanation:

A bond is formed when two atoms have less than 8 electrons in their valency and to satisfy octet config. , they either gain, lose or share electrons.

Now, if for example:

1. NaCl is formed when Na loses an electron(the extra electron) and forms a cation. Now it has only 8 in its valence shell.

2. Cl gains this electron and becomes an anion. Now it has 7+ 1electron from Na. That gives 8 electrons in valence shell.

These two ions being attracted by the electrostatic forces of attraction form a bond. This is called an Ionic or electrovalent bond.

Covalent bond is formed when electrons are shared by two atoms.

Here, For example Hydrogen diatomic molecule. The two hydrogen atoms are bonded by sharing of one electron each.

One hydrogen has 1 electron. These two atoms come together and share their electrons. Now the two electrons (one pair) lie in between the two hydrogen atoms.