Outer or valence electrons
All elements in the groups (excluding transition metals) have the same number of electrons as the group number.
All elements in the same group have the same number of valence electrons.
Elements with the same number of valence electrons are found in the same group or column of the periodic table. This is because elements in the same group have the same number of valence electrons, which determines their chemical properties. For example, all elements in group 1 have 1 valence electron.
All elements in a group have same chemical properties. They have same number of valence electrons.
All elements in the same A group will have the same number of valence electrons.
All elements in the same A group will have the same number of valence electrons.
All elements in the same group have the same number of valence electrons.
elements in a group have the same number of valence electrons
Valence electrons for elements in the same group are the same because they are located in the outermost energy level of an atom. This common number of valence electrons is what gives elements within a group similar chemical properties.
All elements in Group 7 have the same number of electrons in their outermost shell and this number corresponds to the group number.
The elements in the same group have the same number of valence electrons and hence similar chemical and physical properties.
Elements that have the same number of valence electrons are found in the same group of the periodic table. For example, all elements in Group 1 (e.g. H, Li, Na) have 1 valence electron, while elements in Group 18 (e.g. He, Ne, Ar) have 8 valence electrons. Valence electrons determine an element's chemical properties and reactivity.