Question

When h+ forms a bottle of h2o to form the hydronium ion h3o plus this bond is called a coordinate covalent bond because?

Answer 1

This is called as such because the proton or H+ has taken on both lone electron pairs on the oxygen in the water molecule. As such it is s coordinate covalent bond.

Answer 2

Answer:

The bond formed between $H^{+}$ ion and water molecule is a type of coordinate covalent bond where both the bonding electrons are shared from the oxygen atom of the $H_{2}O$ molecule.

Explanation:

Actually, the coordinate covalent bonds are such bonds which are formed when only one atom shares both the bonding electrons with another atom to form a bond.

Here, the hydrogen ion has only one proton and so it can not share electrons for bond formation. Hence, it accepts one lone pair of electrons from the oxygen atom of the water molecule and thus forms a coordinate covalent bond.

The coordinate covalent bonding between $H^{+}$ ion and water molecule is shown as:

$H^{+}(aq) + H_{2}O (l)-> H_{3}O^{+}(aq)$