Period 1 element

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A period 1 element is one of the chemical elements in the first row (or period) of the periodic table of the elements.

These are:

Chemical elements in the first period
Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
#
Name
1
H
2
He
e--conf.


Template:Element color legend Period 1 element - Period 2 element - Period 3 element - Period 4 element - Period 5 element - Period 6 element - Period 7 element - Period 8 element

Periodic tables

Standard table | Vertical table | Table with names | Names and atomic masses (large) | Names and atomic masses (small) | Names and atomic masses (text only) | Inline F-block | Elements to 218 | Electron configurations | Metals and nonmetals | Table by blocks

Lists of elements

Name | Atomic symbol | Atomic number | Boiling point | Melting point | Density | Atomic mass

Groups:   1 -  2 -  3 -  4 -  5 -  6 -  7 -  8 -  9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
Periods:  1  -  2  -  3  -  4  -  5  -  6  -  7  -  8  -  9
Series:   Alkalis  -  Alkaline earths  -  Lanthanides  -  Actinides  -  Transition metals  -  Poor metals  -  Metalloids  -  Nonmetals  -  Halogens  -  Noble gases
Blocks:  s-block  -  p-block  -  d-block  -  f-block  -  g-block

ar:عناصر الدورة الأولى ca:Elements del període 1 de:Periode-1-Element es:Elementos del periodo 1 eo:Elemento de periodo 1 fr:Éléments de la période 1 it:Elementi del periodo 1 nl:Periode 1 element ja:第1周期元素 sv:Grundämnen i period 1 th:ธาตุคาบ 1 tr:1. periyot elementleri zh:第1周期元素