Elements in a group have the same number of valence electrons and hence they have similar chemical and physical properties.
The noble gases, column 18 in the most common modern periodic table.
hydrogen
groups or family:))
A vertical column is called a 'group.' A horizontal row is called a 'period,' thus the periodic table.
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.
They have the same Valency
Elements in a given column have the same number of valence electrons and hence the similar properties.
Chemicals in a column, or "group" have similar chemical properties.
they all have the same electrons.
Representative elements
groups
The noble gases, column 18 in the most common modern periodic table.
Elements in same column have equal number of valence electrons. so they possess similar chemical properties.
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.
A group of elements.
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hydrogen