The first compound of the noble gasees was made in 1962. Barlett and Lohman had previously used the highly oxidizing compound platium hexaflouride to oxidize dioxygen.
`O_(2)+PtF_(6) to O_(2)^(+)[PtF_(6)]^(-)`
The first ionization energy for `O_(2) to O_(2)` is `1165kJ*mol^(-1)`, which is almost as the value of `1170kJ*mol^(-1)` for `Xe to Xe^(+)`. It was predicated that xenon should react with `PtF_(6)`. Experimental showed that when deep of red `PtF_(6)` vapour was mixed with an equal volume of Xe the gases combined immediately at room temperature to produce a solid.
`Xe+PtF_(6) to Xe[PtF_(6)]`
Q. IUPAC name of first xenon-compounds synthesized by secientist Barlett is :

Options

A. xenonhexaflouroplatinate(IV)
B. xenonhexaflouroplatinate(V)
C. hexafluoroplatinum(V) xenon
D. xenoniumhexafluoroplatinum(V)

Answer

To determine the IUPAC name of the first xenon compound synthesized by scientists Bartlett and Lohman, we need to analyze the reaction and the resulting compound.

### Step-by-Step Solution:

1. **Identify the Reaction**:
The reaction is given as:
\[ \text{Xe} + \text{PtF}_6 \rightarrow \text{Xe}[\text{PtF}_6] \]
Here, xenon (Xe) reacts with platinum hexafluoride (PtF6) to form a complex.

2. **Determine the Oxidation State of Xenon**:
In the reaction, xenon is replacing the dioxygen in the earlier reaction where dioxygen has a positive charge:
\[ \text{O}_2 + \text{PtF}_6 \rightarrow \text{O}_2^{+}[\text{PtF}_6]^{-} \]
Since O2 has a +1 charge, xenon must also have a +1 charge in this complex:
\[ \text{Charge of Xe} = +1 \]

3. **Determine the Oxidation State of Platinum**:
In the complex \(\text{Xe}[\text{PtF}_6]\), the charge on the entire complex is neutral. The fluorine atoms each have a -1 charge, and there are 6 fluorine atoms:
\[ \text{Total charge from F} = 6 \times (-1) = -6 \]
Let \(x\) be the oxidation state of platinum (Pt). The equation for the charge balance is:
\[ x + (-6) = 0 \implies x = +6 \]
Therefore, platinum has an oxidation state of +6.

4. **Naming the Compound**:
The IUPAC naming convention states that the cation is named first followed by the anion. In this case:
- The cation is xenon, which carries a +1 charge.
- The anion is the complex ion formed by platinum and fluorine, specifically, it is named as "hexafluoroplatinate" because there are six fluorine atoms.

5. **Final Name**:
Combining the names, the full IUPAC name of the compound is:
\[ \text{Xenon hexafluoroplatinate (V)} \]
The oxidation state of platinum is indicated in Roman numerals as (V).

### Conclusion:
The IUPAC name of the first xenon compound synthesized by scientists Bartlett is **Xenon hexafluoroplatinate (V)**.