Question

will mark as brainliest!!!!!!!!!! Element X has two isotopes. The table gives information about these isotopes.

Isotope Atomic Mass (amu) Abundance (%)
X-63 62.9296 69.15
X-65 64.9278 30.85
The average atomic mass of element X is _____amu.

Answer 1

=>Average atomic mass=£ of atomic mass of isotopes × Abundance /100
=>Avg atomic mass=62.9296× 69.15 +64.9278 30.85/100
=>avg atomic mass=63.54g