Question

Which of the following contains greatest number of atoms?

• A. 1.0 g of butane (C₄H₁₀)
• B. 1.0 g of nitrogen (N₂)
• C. 1.0 g of silver (Ag)
• D. 1.0 g of water (H₂O)

Answer 1

The correct option is A

1.0 g of butane (C₄H₁₀)

No of atoms in 1gm butane =$\frac{1}{58}$$\times$14$N_A$

No of atoms in 1gm$N_2$ =$\frac{1}{28}$$\times$2$N_A$

No of atoms in 1gm$H_{2}O$ =$\frac{1}{108}$$\times$3$N_A$

No of atoms in 1gm Ag =$\frac{1}{108}$$\times$$N_A$