Which of the following is a property of isotopes of an element?
(i) They have the same atomic mass.
(ii) They have the same atomic number.
(iii) They exhibit different physical properties.
(iv) They exhibit similar chemical properties.
1
(ii) and (iii)
2
(ii), (iii) and (iv)
3
(ii) and (iv)
4
(i), (iii) and (iv)