Charge on `alpha-`particle is

Options

A. `4.8 xx 10^(-19)C`
B. `1.6 xx 10^(-19)C`
C. `3.2 xx 10^(-19)C`
D. `6.4 xx 100^(-19)C`

Answer

To find the charge on an alpha particle, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Composition of an Alpha Particle**:
An alpha particle is essentially a helium nucleus, which consists of 2 protons and 2 neutrons.

2. **Determine the Charge of a Proton**:
The charge of a single proton is approximately \( +1.6 \times 10^{-19} \) coulombs.

3. **Calculate the Total Charge of the Alpha Particle**:
Since an alpha particle contains 2 protons, the total charge can be calculated by multiplying the charge of one proton by the number of protons:
\[ \text{Total Charge} = 2 \times \text{Charge of one proton} = 2 \times (1.6 \times 10^{-19} \, \text{C}) \]
\[ \text{Total Charge} = 3.2 \times 10^{-19} \, \text{C} \]

4. **Conclusion**:
Therefore, the charge on an alpha particle is \( 3.2 \times 10^{-19} \) coulombs.

### Final Answer:
The charge on an alpha particle is \( 3.2 \times 10^{-19} \) coulombs.

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