Which of the following does have minimum mass in grams ? (i) 1 gram atom of oxygen (ii) 4.2 gram molecules of H_2 (iii) 2 gram molecules of helium (iv) 1.6 gram atoms of chlorine

Which of the following does have minimum mass in grams ? (i) 1 gram a

1.	Which of the following does have minimum mass in grams ? (i) 1 gram atom of oxygen (ii) 4.2 gram molecules of H_2 (iii) 2 gram molecules of helium (iv) 1.6 gram atoms of chlorine
Answer» ANSWER :2 GRAM MOLECULES of HELIUM