the relative molecular mass of molecule of chlorine is 72.which properties of the atoms in this molecule are the same

Properties like ionization energy and bond energy will be the same.

To determine which properties of the atoms in a chlorine molecule are the same, we need to analyze the structure and composition of the molecule.

A chlorine molecule (Cl2) is a diatomic molecule, meaning it consists of two chlorine atoms bonded together. Each chlorine atom has an atomic mass of approximately 35.5. Since the relative molecular mass of a chlorine molecule is given as 72, it implies that the combined mass of the two chlorine atoms is 72.

From this information, we can deduce that the two chlorine atoms in a chlorine molecule have the same atomic mass. Therefore, the property of mass is the same for both atoms in the molecule.

It is important to note that the properties of the atoms in a molecule are not limited to mass. Other properties, such as electronegativity, atomic radius, and bonding behavior, may differ between the atoms in a molecule. In the case of a chlorine molecule, however, the mass is the property that remains the same for both atoms.