Question

Avogadro?? number of oxygen atom weighs

• A. 32 g
• B. 8 g
• C. 56 g
• D. 16 g

Answer 1

Answer: (D)

16 g

Answer 2

Weight of $6.023 \times 10^{23}$ molecules of oxygen $\left( O _{2}\right)=32\, g .$ Since the oxygen is diatomic, therefore weight of Avogadro's number of oxygen atom $=\frac{32}{2}$ $=16 \,g$