Question

What is the correct name of $Cl{{O}_{2}}$?
A. Chlorine dioxide
B. Chlorine (II) oxide
C. Chlorine oxide
D. Monochlorine dioxide
E. Chlorine dioxygen

Answer 1

To write the correct name of $Cl{{O}_{2}}$ $Cl{{O}_{2}}$ we have to check the positive and negative oxidation state. Positive oxidation state atoms should be written first and the atom with negative oxidation state is written. We use prefix di when two atoms of the same type are present. In the name of oxygen ,'-ygen' is replaced by 'ide'.

Complete answer:
From your chemistry lessons you have learned about the $Cl{{O}_{2}}$ and its name which is given as Chlorine dioxide. Here, we will now know how to write the name of $Cl{{O}_{2}}$.
So, to write the name of a compound we have to know the names of the atoms used for the formation of compounds. Then we have to check the atom with positive and negative oxidation states. The atom with positive oxidation state is written first and then the atom with negative oxidation state is written. If in a compound one atom is present two times then we use prefix di before its name.
Now, we have to write the name of $Cl{{O}_{2}}$. So, the two atoms that are present here are chlorine and oxygen and the number of oxygen is two therefore we use di before the name of oxygen. In this compound chlorine has a positive oxidation state, so it is written first and then the oxygen because it has a negative oxidation state.
Now, when we will write the name of oxygen then the suffix 'ygen' is replaced with 'ide'.
Therefore the correct name of $Cl{{O}_{2}}$ will be Chlorine dioxide.

Thus the correct option will be (A).

Note:
Chlorine dioxide is mainly used as a bleaching agent for textiles and paper pulp. Chlorine dioxide is also used for the treatment of water. Bleaching is the process of whitening of fabric by the removal of the natural color and is mainly carried out by the process of chemical selection according to the composition of the fabric.