74 2 · 8 · 18 · 32 · 12 · 2

Tungsten, W, element 74

Transition metal· Period 6· Group 6· d-block

Configuration [Xe]4f145d46s2

Atomic weight
183.84Da
Phase
solid
Density
19.3g/cm³
Melting point
3,687.15K 3,414 °C
Boiling point
5,828.15K 5,555 °C
Electronegativity
1.7

White or grey metallic transition element,formerly called Wolfram. Forms a protective oxide in air and can be oxidized at high temperature. First isolated by Jose and Fausto de Elhuyer in 1783. 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 tungsten

Atomic weight The standard atomic weight. For an element with no stable isotope, the mass of its longest-lived isotope.
183.84Da
Source: mendeleev
Electron configuration
[Xe]4f145d46s2
Source: mendeleev
Uncertainty of the atomic weight
0.01Da
Source: mendeleev
Electron configuration in full The electron configuration with the noble-gas core written out.
1s22s22p63s23p63d104s24p64d104f145s25p65d46s2
Source: Worked outfrom electron configuration
Electrons in each shell Counted from the electron configuration, from the first shell outward.
2 · 8 · 18 · 32 · 12 · 2
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.

SubshellScreening σEffective charge Z − σ
1s1.434372.5657
2s19.330254.6698
2p4.425869.5742
3s22.1351.87
3p21.382452.6176
3d13.547660.4524
4s33.441240.5588
4p34.451639.5484
4d36.826837.1732
4f39.289234.7108
5s50.458523.5415
5p52.674521.3255
5d57.25816.742
6s64.14569.8544