Chemistry
Use this symbol lookup to calculate find full element names and atomic data from element symbols such as k, fe, or au.
Calculator
Element result
Potassium
Atomic number
19
Atomic mass
39.0983 u
Group
1
Period
4
Block
s-block
Phase at room temp
solid
Potassium is a soft alkali metal and an essential electrolyte in living organisms.
Electron configuration
[Ar] 4s1
Electronegativity
0.82
Density
0.862 g/cm3
Melting point
336.53 K
Boiling point
1032 K
Discovered by
Humphry Davy
Year discovered
1807
Common uses
Fertilizers, Glass, Soaps, Biological electrolytes
Celsius
25 C
Fahrenheit
77 F
Kelvin
298.15 K
At this temperature, Potassium is expected to be solid.
Melting point: 336.53 K
Boiling point: 1032 K
Physical state estimates are based on standard pressure and may change under different pressure conditions.
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Trust note
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Symbol lookup = case-insensitive symbol match
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Assumptions
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Worked example
Atomic number: 26
Calculator guide
Find full element names and atomic data from element symbols such as K, Fe, or Au. This page includes an interactive calculator, concise formula notes, worked examples, FAQs, related calculators, and practical guidance you can revisit whenever needed.
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