Question

All the elements of the same group have similar ___________ properties.

Answer 1

Same group of elements is nothing but the elements along the same vertical line in the periodic table. These elements are having some similar properties. Try to analyze what are those similar properties and of what type they are in order to answer the above question.

Complete Solution :
A group of elements means the elements that are present in the same vertical line in the periodic table. All the elements in a group have the same electronic configuration. That means these elements are having the same number of electrons in the valence shell also known as the outermost orbit of the atom. This makes all these elements to have similar properties like Atomic number, atomic mass, electronegativity, density, melting point, boiling point, Van Der Waals radius, ionic radius, standard potential, ionization potential etc. These are the chemical properties of an element. All the elements in a group will have the similarities in these properties due to having the same number of electrons in the outermost orbit of the element.
Hence all the elements of the same group have similar chemical properties.

Note: Most of these properties as mentioned above will either gradually decrease or gradually increase along the group from bottom to top or top to bottom. Also these properties will change from group to group or along the period (elements along the horizontal line) due to having the different electronic configuration of the elements.