The relative molecular mass of a molecule of chlorine is 72. Which properties of the atoms in this molecule are the same? 1 radius 2 nucleon number relative isotopic mass

Choice D is correct because only statement 1 is true. Property 1 is same (& statement 1 is correct) because the radius of an atom is independent of the number of neutrons present. Property 2 is different (& statement 2 is incorrect) because The nucleon number is the number of protons plus the number of neutrons. Different isotopes of chlorine in the molecule can have different nucleon numbers. Note: The number of protons and electrons of an element is constant, but the number of neutrons can vary across atoms of the element. Property 3 is different (& statement 3 is incorrect) because Relative isotopic mass is the mass of a certain atom compared to the relative mass of its element. The mass of an atom varies for an element, so the relative isotopic mass of each atom of chlorine varies.

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Group 17 | 2005 - O/N - 9701/1 | Q31