Chemical element
Hafnium
- Hf
- Z = 72
- transition metal
Hafnium (Hf) is element 72, a transition metal in period 6 and group 4. Its standard atomic weight is 178.49 Da. Weights follow IUPAC standard atomic weights, 2021 revision.
Identity
SymbolHf
Standard atomic weight178.49atomic mass units (Da)
Mass in kilograms2.9638962 × 10^-25
Categorytransition metal
Group4
Period6
Blockd-block
Electrons in a neutral atom72
Neutrons in the most common isotope106≈
Quantities
Molar mass178.49 g/mol
Mass of one mole178.49 grams
Atoms in one gram3.3739373 × 10^21
Mass of one atom2.9638962 × 10^-22 g
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