Answer to Question #254273 in General Chemistry for Judy

Question

I solved a question in which I calculated the relative atomic mass of a sample of krypton from a mass spectrum. I was then asked this question:"Explain why the value you calculated could have been different from the relative atomic mass given in the periodic table" Thank you

Answer 1

Isotopes are atoms of the same atomic number having different masses due to different numbers of neutrons. The atomic mass of an element is the weighted average of the masses of the isotopes of that element.