Chemistry · Some Basic Concepts of Chemistry

The mass of a single hydrogen atom is \( 0.00000000000000000000000166\text{ g} \). In proper scientific notation \( N \times 10^n \), this value is correctly written as:

1. A
   \( 16.6 \times 10^{-25}\text{ g} \)
2. B
   \( 1.66 \times 10^{-27}\text{ g} \)
3. C
   \( 0.166 \times 10^{-23}\text{ g} \)
4. D
   \( 1.66 \times 10^{-24}\text{ g} \)