Question

how to calculate the atomic mass of S

Answer 1

here is your answer

atomic mass is the sum of proton and neutron of that atom

S stands for Sulphur

no. of proton in Sulphur = 16

no. of neutron in Sulphur = 16

so, atomic mass of Sulphur = no. of protons of Sulphur + no. of neutrons of Sulphur

atomic mass of Sulphur = 16+16 = 32.

so, atomic mass of Sulphur is 32.