(Solved): Question (1 point) An undiscovered element has three naturally occurring isotopes of \( X-55, X-57 ...

Question (1 point) An undiscovered element has three naturally occurring isotopes of \( X-55, X-57 \), and \( X-58 \). Isotope X-55 has an abundance of \( 26.00 \% \) and isotope \( X-57 \) has an abundance of \( 45.65 \% \). 1st attempt What is the average mass of this element?