Question

K + Br2 → KBr

Answer 1

Answer:  A covalently bonded molecule in the reaction

$K + Br_{2} \rightarrow KBr$ is $Br_{2}$.

Explanation:

A bond formed by sharing of electrons between two or atoms is called a covalent bond.

For example, bromine is a group 17 element and it has 7 valence electrons. It needs one more electron to complete its octet.

So, when one bromine atom chemically combines with another bromine atom then sharing of electrons takes place which leads to the formation of $Br_{2}$ molecule.

Hence, in the equation $K + Br_{2} \rightarrow KBr$; $Br_{2}$ reactant is a covalently bonded molecule. A covlent bond is formed by two or more non-metal atoms that chemically combine together.

In a chemical equation, reactants are written on the left side and products are written on right side.

Thus, we can conclude that a covalently bonded molecule in the reaction

$K + Br_{2} \rightarrow KBr$ is $Br_{2}$.