Question

A mass spectrometer has determined the mass and abundances of all isotopes of an unknown element. The first isotope has a mass of 38.96amu (93.28%) and the second a mass of 40.96amu (6.72%). Calculate the average atomic mass and identify the unknown element, WRITE ONLY THE SYMBOL FOR YOUR ANSWER.

Answer 1

I believe it is Potassium (K)

Step-by-step explanation:

I did the math on a calculator and it was the closest atomic mass to potassium.