The ratio of the mass of the proton to the electron is about:

# The ratio of the mass of the proton to the electron is about:

1. A
$1.8×1{0}^{3}$
2. B
$2.0×1{0}^{-3}$
3. C
1
4. D
0

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### Solution:

Mass of proton is $1.6×1{0}^{-24}g$
Mass of electron is $9.11×1{0}^{-28}g$
The ratio of the mass of the proton to the mass an electron,
$\frac{1.67×1{0}^{-24}}{9.11×1{0}^{-27}}=1835=1.8×1{0}^{3}$. Hence, 1 is correct option

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