Quickly going through the list of available elements, the possible option is:

1. Sn3d3/2 - BE = 493 eV

While there are other options, such as Sc, Rh, Ir, Po, etc, they are less likely based on the absorption cross section of the elements.

Please make sure that the carbon correction has been done, and the X axis is indeed binding energy. If the element is Tin, there will be another intense peak at BE = 485 eV. Since xps peak intensities follow the ratios of absorption cross-section, the peak at 485 eV is supposed to be 1.4 times more intense than the one at 493 eV. For future, it will be helpful to provide the spectrum, and what all elements are expected to be there in the sample.

Careful about the carbon correction. It is more of a last resort method, blindly applying it may create more errors than it fixes.