STRUCTURE OF HNO4,(CH3)2SO,(CrO4)2-,NH4NO3,FNO3

To understand the structure of these compounds, let's break them down one by one:

1. HNO4:
HNO4 is the chemical formula for pernitric acid. However, HNO4 does not exist as a stable compound. It is a hypothetical compound discovered by computational chemistry methods. Due to its instability, it has not been synthesized or isolated. As a result, its structure is not well-defined.

2. (CH3)2SO:
(CH3)2SO is the chemical formula for dimethyl sulfoxide, commonly known as DMSO. In its structure, the sulfur atom is connected to two methyl groups (CH3) and an oxygen atom (O). The structure is usually illustrated as follows:
||
|| O
CH3 O || CH3
||
S

3. (CrO4)2-:
(CrO4)2- is the chemical formula for chromate ion. In its structure, a central chromium atom (Cr) is bonded to four oxygen atoms (O), forming a tetrahedral arrangement. Each oxygen atom is connected to the chromium atom through a single bond. The structure is represented as follows:
O
//
O - Cr - O
\\
O

4. NH4NO3:
NH4NO3 is the chemical formula for ammonium nitrate. In its structure, there are two ions, ammonium ion (NH4+) and nitrate ion (NO3-), held together by ionic bonds. The ammonium ion consists of one nitrogen atom (N) bonded to four hydrogen atoms (H). The nitrate ion consists of one nitrogen atom (N) bonded to three oxygen atoms (O). The structure can be represented as:
H O
| |
H - N - H O - N - O
| |
H O

5. FNO3:
FNO3 is the chemical formula for fluoro nitrate. However, FNO3 does not exist as a stable compound. Therefore, its structure is also not well-defined.

It is important to note that the structural representations provided here are simplified representations and do not incorporate accurate bond angles or depict the three-dimensional arrangement of atoms.