Tungsten

TRANSITION METAL · GROUP 6 · PERIOD 6

Tungsten

183.84

Atomic Data

[Xe] 4f¹⁴ 5d⁴ 6s²

Shell	n	Subshell	Electrons	Cumulative
K	1	1s	2	2
L	2	2s	2	4
L	2	2p	6	10
M	3	3s	2	12
M	3	3p	6	18
M	3	3d	10	28
N	4	4s	2	30
N	4	4p	6	36
N	4	4d	10	46
N	4	4f	14	60
O	5	5s	2	62
O	5	5p	6	68
O	5	5d	4	72
P	6	6s	2	74
Total			74	74

Tungsten has four naturally occurring stable isotopes. The most abundant is ¹⁸⁴W, comprising 30.64% of all naturally occurring Tungsten.

Isotope	Symbol	Protons	Neutrons	Abundance	Stability
Tungsten-182	¹⁸²W	74	108	26.5	Stable
Tungsten-183	¹⁸³W	74	109	14.31	Stable
Tungsten-184	¹⁸⁴W	74	110	30.64	Stable
Tungsten-186	¹⁸⁶W	74	112	28.43	Stable

Tungsten is present in Earth's crust at approximately 1.3 ppm by mass and at approximately 0.5 ppm by mass throughout the universe.

Tungsten

1.3 ppm

Silicon (ref.)

277,000 ppm

Oxygen (ref.)

461,000 ppm

Tungsten

0.5 ppm

Helium (ref.)

230,000 ppm

Hydrogen (ref.)

739,000 ppm

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