- All are gaseous
- All have a low reactivity
- All have the outermost shell of electrons completely filled
- All have very low melting and boiling points
- Excepting argon they are rare gases
A vertical column is called a 'group.' A horizontal row is called a 'period,' thus the periodic table.
hydrogen
groups or family:))
In the periodic table a column is the elements that go down the way.for exampleLiNaKRbCsFrThis is a column and called the Alkali metals. Group 1.A period is when it goes across.
Elements are organised in terms of properties in same column. Properties are found to be periodic .
Representative elements
No, that is not a symbol on the periodic table. Simliar symbols includeAg which is SilverAc which is ActinumAm which is AmericiumAl for AluminiumAr for ArgonAt for AstatineAs for ArsenicAu for Gold
groups
A group in the periodic table is a column of elements that share similar chemical properties due to having the same number of electrons in their outer energy level. Groups are vertical columns and are numbered from 1 to 18.
iDkkk Lmaoo !!
A group of elements.
A vertical column is called a 'group.' A horizontal row is called a 'period,' thus the periodic table.
In the Periodic Table of the Elements, a column (group) contains all elements that exist with the group number of electrons in the outer energy level of an atom of that element.
hydrogen
Chemical properties.
groups
groups or family:))