Elements in the same column on the Periodic Table have similar chemical reactivity because they have the same outer electron configuration and it is the electron structure that determines an elements properties.
the elements have the same number of valence electrons
Because that is how the table was arranged.
elements in the same group have the same number of valence electrons, which determine the elements chemical properties
Because they have the same number of valence electrons.
Elements in a group haven't identical reactivity; but similarities are due to the electronic structure of these elements.
Elements arranged in one column exhibit similar chemical properties. Elements in same column also have similar physical properties. Also elements in same column has similar electronic configuration.
Similar chemical properties.
They have similar (more or less) chemical properties.
Elements in the same group (column) have the same properties. All the elements in group one have similar properties. All the elements in group two have similar properties. And so on...
they represent elements. the elements in a given column (or group) have the same number of valence electrons and hence similar properties.
Chemical properties.
A group of elements.
Chlorine and Bromine have similar properties. You can tell because they are in the same vertical column in the periodic table.
Elements in the same column have similar chemical properties. They are from the same family.
They're arranged so that the elements in each column have similar properties.
Elements arranged in one column exhibit similar chemical properties. Elements in same column also have similar physical properties. Also elements in same column has similar electronic configuration.
They have similar properties, usually.
Elements in the same column have similar properties.
Similar chemical properties.
Elements that have similar chemical properties occupy the same group on the Periodic Table.
The elements in a column on the periodic table form a group (or family) because they have similar physical and chemical properties.
Elements in a given column have the same number of valence electrons and hence the similar properties.