This list includes 1 Chemical Elements that start with K that start with K, from “Krypton” to “Krypton”. Krypton is a colorless noble gas commonly used in lighting, photography, and some lasers. See the A–Z index for other letters.
Chemical Elements that start with K are elements whose common English names begin with the letter K. A notable example is “Krypton”, historically important in lighting and early spectroscopic studies.
Below you’ll find the table with Atomic number, Atomic weight, and Discovery year.
Atomic number: The whole-number identifier for each element; you use it to locate the element and compare properties quickly.
Atomic weight: The standard atomic mass shown with three decimals, which helps you compare relative masses for calculations and reference.
Discovery year: The year or period when the element was discovered or isolated, helping you place it in historical and scientific context.
Chemical Elements that start with K
| Name | Symbol | Atomic number | Standard atomic weight (u) | Description |
|---|---|---|---|---|
| Krypton | Kr | 36 | 83.80 | Discovered 1898; named from Greek “kryptos” meaning “hidden”; a noble (inert) gas notable for use in lighting, photography and certain lasers. |