Molar Mass of Er (Erbium)

Molar Mass Calculator
Chemical formula Write symbols with a capital letter: CoCl2 is cobalt chloride, COCl2 is phosgene. A hydrate takes a dot: CuSO4·5H2O or CuSO4.5H2O

What is the molar mass of Er?

Answer

M(Er) =
167.26 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024).

Contribution of each element
Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
Ererbium1167.26167.26 w = 100.00%

Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

See Also

Recalculate with different values ↑

Neighbouring elements of the periodic table

FormulaM, g/mol
Tb (terbium)158.93
Dy (dysprosium)162.50
Ho (holmium)164.93
Er (erbium)167.26
Tm (thulium)168.93
Yb (ytterbium)173.05
Lu (lutetium)174.97

FAQ

What is the molar mass of Er?

M(Er) = 167.26 g/mol

How is the molar mass of erbium different from its atomic weight?

Only in units: the relative atomic mass Ar(Er) = 167.26 has no unit, and the molar mass M(Er) = 167.26 g/mol is the mass of one mole of atoms (6.022 × 10²³ of them).

How many grams are in 2 moles of Er?

m = n × M = 2 mol × 167.26 g/mol = 334.52 g.

See Also