The relative atomic masses of nickel cobalt, iron are 58.70, 58.9332, and 55.847, respectively, which element has the greatest mass? The least mass?
Cobalt has the greatest mass while iron has the least mass.
Atomic masses are numerically equal to molar masses (mass in 1 mole of an element or molecule).
So, based on the values given, cobalt has the greatest mass since 1 mole of cobalt has 58.9332 grams. On the other hand, iron has the least mass since 1 mole of iron only has 55.847 grams.