Palladium (Pd)
Palladium is the 46th element, a transition metal in the d-block. Its standard atomic weight is 106.42.
Palladium
106.42
What the table records
- Atomic number
- 46
- Standard atomic weight
- 106.42
- Group
- 10
- Period
- 5
- Block
- d-block
- Category
- Transition metal
- [Kr] 4d10
- Valence electrons
- 10
- Typical valence
- Van der Waals radius
- 2.05 Å
- Covalent radius
- 1.39 Å
Molecules containing palladium
The lightest named structures in this library that contain Pd.
Allyl(1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene)chloropalladium(II)
Pd+2 · 106.42 g/mol
Palladium
Pd · 106.42 g/mol
Palladium monoxide
OPd · 122.42 g/mol
Palladium hydroxide
H₂O₂Pd · 140.43 g/mol
palladium(I) acetate
C₂H₄O₂Pd · 166.47 g/mol
Palladium Chloride
Cl₂Pd · 177.33 g/mol
N,N-diethylethanamine;palladium
C₆H₁₅NPd · 207.61 g/mol
palladium(II) acetate
C₄H₆O₄Pd · 224.51 g/mol
Palladium (II) acetate
C₄H₈O₄Pd · 226.52 g/mol
Dipotassium;palladium;carbonate
CK₂O₃Pd · 244.62 g/mol
Palladium bromide (PdBr2)
Br₂Pd · 266.23 g/mol
PALLADIUM(II) ACETYLACETONATE
C₁₀H₁₄O₄Pd · 304.64 g/mol
How to read these numbers
The standard atomic weight is an average over the isotopes as they occur naturally, which is why it is rarely a whole number. It is the figure a molar mass calculation uses. Work in mass spectrometry wants the monoisotopic mass of a single isotope instead, which is a different number.
The two radii are not the same measurement. The covalent radius is half the distance between two bonded atoms of the element; the van der Waals radius is how close a non-bonded atom gets before repulsion takes over, and is always the larger. Space-filling models are drawn with the second, ball-and-stick models with the first — which is why the same molecule looks so different in the two.