Question

Systematic name of ${{H}_{2}}O$ (oxide hydrogen) is
A) Water
B) Hydrogen oxide
C) Oxidane
D) None of these

Answer 1

Hint: Systematic name refers to a name or suffix or prefix used to represent a specific group or atoms,which makes the identification of the atoms or groups present in the structure simpler.
Systematic names are assigned for molecules by following the IUPAC rules.

Complete answer:
So in the question we are supposed to give the systematic name for ${{H}_{2}}O$. This type of question is a completely factual type question. We know that the molecule ${{H}_{2}}O$ which we commonly call as water is also accepted By the IUPAC,but still it is only a common name of that molecule as the IUPAC suggested names and the chemical names gives an idea about the atoms present in the molecule.
As the name suggests the systematic name represents the way of naming a molecule given by following some systematic methods like giving prefixes or suffixes, which represents the group or atoms present in the molecule.
And from the systematic name of a molecule we will get an idea of the structure of the molecule.
We generally name ${{H}_{2}}O$ as dihydrogen oxide or as dihydrogen monoxide, since as stated in the definition of systematic naming the name will give the number of atoms and the different atoms present in a molecule.
Here in this molecule ${{H}_{2}}O$, we know that there is two hydrogen hence a prefix di should be given and there is only one oxygen hence the prefix mono can be given as the prefix of simply write as dihydrogen oxide.
The systematic name of ${{H}_{2}}O$ is also known as oxidane.
Here if we compare with the nomenclature of hydrocarbons –ane as a suffix.
As these alkanes can be considered as the hydrides and the compounds containing the hydrogen only are also given the suffix –ane in the field of inorganic chemistry.Hence the name oxidane.

So the correct answer for the above question is option (C).

Note:
The compounds similar to the type ${{H}_{2}}O$ which possess the prefix as –ane in their systematic names are:
Silicon-hydrogen compounds are called as silanes ($Si{{H}_{4}}$)
Phosphorus-hydrogen compounds are called phosphates ($P{{H}_{3}}$) etc.
The other compounds having the systematic names are:
For ammonia its azane, for ${{H}_{2}}S$ is hydrogen sulphide etc.