Periodic Table

Question 1

Average Atomic Mass

Answer 1

Weighted average of all naturally occurring isotopes of an element. The observed mass of an element in atomic mass units is written as “amu” or simply, “u”

Question 2

Percent Abundance

Answer 2

Tells us how much of each isotope is naturally occuring

Question 3

Group / Family

Answer 3

All the elements in the same column of the periodic table, they have similar chemical properties