Question

Which of the following pairs are isotopes?

a)Oxygen and ozone
b)Ice and steam
c)Nitric oxide and nitrogen dioxide
d)Hydrogen and deuterium​

Answer 1

Answer:

Isotopes are elements with same atomic number but different mass number. Hydrogen and Deuterium are isotopes with same atomic number but different mass number. Hydrogen have atomic number 1 and mass number 1 where as deuterium have atomic number 1 but mass number 2.