83 2 · 8 · 18 · 32 · 18 · 5

Bismuth, Bi, element 83

Post-transition metal· Period 6· Group 15· p-block

Configuration [Xe]4f¹⁴5d¹⁰6s²6p³

Atomic weight: 208.98Da
Phase: solid
Density: 9.79g/cm³
Melting point: 544.552K 271.4 °C
Boiling point: 1,837.15K 1,564 °C
Electronegativity: 1.9

White crystalline metal with a pink tinge, belongs to group 15. Most diamagnetic of all metals and has the lowest thermal conductivity of all the elements except mercury. Lead-free bismuth compounds are used in cosmetics and medical procedures. Burns in the air and produces a blue flame. In 1753, C.G. Junine first demonstrated that it was different from lead. Description from mendeleev.

Back to the table

The outermost shell: the valence electronsThe inner shellsThe nucleus One bead for each electron, on the ring of its shell, counted from the nucleus out. The rings turn at their own pace; the model is Bohr's picture of the atom, which places electrons in shells but not on true orbits.

Atomic properties

5 of 5 fields have a value for bismuth

Atomic weight The standard atomic weight. For an element with no stable isotope, the mass of its longest-lived isotope.: 208.9804Da; Source: mendeleev
Electron configuration: [Xe]4f¹⁴5d¹⁰6s²6p³; Source: mendeleev
Uncertainty of the atomic weight: 1×10⁻⁵Da; Source: mendeleev
Electron configuration in full The electron configuration with the noble-gas core written out.: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰4f¹⁴5s²5p⁶5d¹⁰6s²6p³; Source: Worked outfrom electron configuration
Electrons in each shell Counted from the electron configuration, from the first shell outward.: 2 · 8 · 18 · 32 · 18 · 5; Source: Worked outfrom electron configuration

Screening of each subshell

Clementi's screening constants: how much of the nucleus's charge the other electrons hide from an electron in each subshell. What is left is the effective nuclear charge it feels.

Subshell	Screening σ	Effective charge Z − σ
1s	1.6018	81.3982
2s	21.824	61.176
2p	4.533	78.467
3s	24.1145	58.8855
3p	23.0678	59.9322
3d	13.4585	69.5415
4s	35.2928	47.7072
4p	36.1496	46.8504
4d	37.7608	45.2392
4f	37.9308	45.0692
5s	51.971	31.029
5p	53.979	29.021
5d	58.756	24.244
6s	67.76	15.24
6p	69.6602	13.3398