The element with the largest percentage abundance would be O.
Molar mass of C7H5N3O6 = 227.13 g/mol
Percent by mass of C = 7 x 12.011/227.13 x 100
= 37.01%
Percent of H = 5 x 1.008/227.13 x 100
= 2.22%
Percent of N = 3 x 14.007/227.13 x 100
= 18.5%
Percent of O = 6 x 15.999/227.13 x 100
= 42.26%
Thus, oxygen (O) has the largest percent abundance in the compound.
More on percent abundance can be found here: https://brainly.com/question/17959554?referrer=searchResults
