About Jennifer; Products. Paper; Gifts & Desk; Baby & Kids; Holiday; Home & Entertaining, This is a list of the 118 chemical elements which have been identified as of 2020. A chemical element , often simply called an element , is a species of atoms which all have the same number of protons in their atomic nuclei (i.e.
the same atomic number, or Z).. A popular visualization of all 118 elements is the periodic table of the elements , a convenient tabular arrangement of the elements by …
This is a list of elements by atomic number with symbol. List of elements Atomic Number Name Symbo Group Period Number Block State at. STP Occurrence Description 1 Hydrogen H 1 1 s Gas Primordial Non-metal 2 Helium He 18 1 s Gas Primordial Noble gas 3 Lithium Li 1 2 s Solid Primordial Alkali metal 4, Notes. All values refer to 25 °C and to the thermodynamically stable standard state at that temperature unless noted. Values from CRC refer to 100 kPa (1 bar or 0.987 standard atmospheres).Lange indirectly defines the values to be at a standard state pressure of 1 atm (101325 Pa), although citing the same NBS and JANAF sources among others.
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