The simple and basic answer is that they all react in the same way but more vigourously as you go down the column. Take the Group I elements, otherwise known as the Alkaline Metals. Firt in the column is Lithium. It reacts in water by whizzing around the surface until it disappears. Next is Sodium which melts and forms a ball and whizzes around the water until it disappears. Then Potassium will do the same as Sodium but will also burn with a flame as it whizzes around the water. Rubdinium will explode on contact with water as will Caesium but Caesium is more violent. Francium will probably be too violent a reaction to even attempt if enough could be gathered for this test.
The more involved answer would be is that within a group, the outer shell of electrons is always the same. As in this example above, Group I has 1 electron in its outer shell and it's always the electrons that determine the chemical behaviour of an atom.
The electron shells would be as follows:
Lithium 2,1
Sodium 2,8,1
Potassium 2,8,8,1
Rubdinium 2,8,8,18,1
Caesium 2,8,8,18,18,1
Francium 2,8,8,18,18,32,1
As the electrons want to be paired in the stated groups, then the outer 1 electron will always be lost more readily than 1 electron being gained (even though this can be done through Covalent bonding which allows electrons to move between atoms to satisfy the outer shell order).
How they act in chemical reactions.
Generally, the valence.
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.
No, but elements in the same vertical columns have similar properties.
These elements have more or less similar chemical properties.
they represent elements. the elements in a given column (or group) have the same number of valence electrons and hence similar properties.
Similar chemical properties.
compopunds
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.
These elements have similar chemical and physical properties.
No, but elements in the same vertical columns have similar properties.
Elements in the same column have similar chemical properties. They are from the same family.
A group of elements.
Elements in a given column have the same number of valence electrons and hence the similar properties.
The elements in same column have equal number of valence electrons. They have similar chemical properties.
Chlorine and Bromine have similar properties. You can tell because they are in the same vertical column in the periodic table.
These elements have more or less similar chemical properties.
number of outermost electrons
Chemical properties.