The mass of one atom of hydrogen is approximately :

Options

A. 1g
B. `3.2 xx 10^(-24) g`
C. `1.6 xx 10^(-24)g`
D. 0.5 g

Explanation

To find the mass of one atom of hydrogen, we can follow these steps:

### Step 1: Understand the concept of moles
1 mole of any substance contains Avogadro's number of particles, which is approximately \( 6.022 \times 10^{23} \) particles (atoms, molecules, etc.). For hydrogen, 1 mole has a mass of approximately 1 gram.

### Step 2: Calculate the mass of one atom
Since 1 mole of hydrogen (which is \( 6.022 \times 10^{23} \) atoms) has a mass of 1 gram, we can find the mass of one atom by dividing the total mass by the number of atoms in a mole.

\[ \text{Mass of one atom of hydrogen} = \frac{1 \text{ gram}}{6.022 \times 10^{23} \text{ atoms}} \]

### Step 3: Perform the calculation
Now, we perform the division:

\[ \text{Mass of one atom of hydrogen} = \frac{1}{6.022 \times 10^{23}} \approx 1.66 \times 10^{-24} \text{ grams} \]

### Step 4: Round the result
Rounding \( 1.66 \times 10^{-24} \) grams gives us approximately \( 1.6 \times 10^{-24} \) grams.

### Step 5: Match with the options
Now we can compare our result with the provided options. The correct answer is:

**1.6 × 10⁻²⁴ grams**

### Final Answer:
The mass of one atom of hydrogen is approximately \( 1.6 \times 10^{-24} \) grams.

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