EN directly proportional to oxidation No. of central atom so answer will be (C)

**Highest Electronegativity of Xe**

The electronegativity (E.N.) of an element indicates its ability to attract electrons towards itself in a chemical bond. It is a property that helps us understand the polarity of a bond and the distribution of electron density in a molecule. In this context, we need to determine which of the given molecules has the highest electronegativity of xenon (Xe).

**1. XeF2 (Xenon Difluoride):**
Xenon difluoride (XeF2) is a compound in which xenon is bonded to two fluorine atoms. Fluorine is a highly electronegative element, and therefore, it attracts the shared electrons towards itself in the Xe-F bonds. However, it is important to note that the electronegativity of xenon in this compound is less than that of fluorine, as xenon is a noble gas with relatively lower electronegativity. So, XeF2 does not have the highest electronegativity of xenon.

**2. XeF4 (Xenon Tetrafluoride):**
Xenon tetrafluoride (XeF4) is a molecule where xenon is bonded to four fluorine atoms. Similar to XeF2, the fluorine atoms have higher electronegativity than xenon. As a result, they attract the shared electrons towards themselves, creating polar Xe-F bonds. However, the overall electronegativity of xenon in XeF4 is still lower than that of fluorine. Therefore, XeF4 does not have the highest electronegativity of xenon.

**3. XeO3 (Xenon Trioxide):**
Xenon trioxide (XeO3) is a compound in which xenon is bonded to three oxygen atoms. Oxygen is also a highly electronegative element, and it attracts the shared electrons towards itself in the Xe-O bonds. However, xenon's electronegativity in XeO3 is higher compared to its electronegativity in XeF2 and XeF4. Therefore, XeO3 has a higher electronegativity of xenon compared to the previous two compounds.

**4. None:**
Based on the analysis above, we can conclude that XeO3 has the highest electronegativity of xenon among the given molecules.

In summary, the molecule with the highest electronegativity of xenon is XeO3 (Xenon Trioxide), as xenon has a higher electronegativity in XeO3 compared to XeF2 and XeF4.