Answer:
Average atomic mass = 20.2 amu
Explanation:
Given data:
Average atomic mass of neon = ?
Abundance of Ne-20 = 90.00%
Abundance of Ne-22 = 10.00%
Solution:
Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) / 100
Average atomic mass = (90.00×20)+(10.00×22) /100
Average atomic mass = 1800 + 220 / 100
Average atomic mass = 2020 / 100
Average atomic mass = 20.2 amu.
