Compared to the mass of lightest nucleus the mass of an electron is only:

\frac{1}{80}

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\frac{1}{360}

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\frac{1}{1840}

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\frac{1}{1000}

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Solution

The correct option is C $\frac{1}{1840}$
Compared to the mass of lightest nucleus the mass of an electron is only $\frac{1}{1840}$ . The lightest nucleus is hydrogen. It contains only one proton. Its mass is about 1840 times the mass of an electron.
Hence correct answer is option C

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Similar questions

\frac{1}{2000}

Atomic mass tells us how heavy is an atom as compared to 1/12th mass of the carbon.

_{3} {L i}^{6} +_{0} n^{1} \to_{2} {H e}^{4} +_{1} H^{3}

_{3} {L i}^{6}

= 6.015126 a m u

_{1} H^{3}

= 3.016049 a m u

_{2} {H e}^{4}

= 4.002604 a m u

_{0} n^{1}

= 1.008665 a m u

Column 1	Column 2	Column 3
i. Triad ii. Octave iii. Atomic number iv. Period v. Nucleus vi. Electron	a. Lightest and negatively charged particle in all the atoms b. Concentrated mass and positive charge c. Average of the first and the third atomic mass d. Properties of the eighth element similar to the first e. Positive charge on the nucleus f. Sequential change in molecular formulae	1.Mendeleev 2. Thomson 3. Newlands 4. Rutherford 5. Dobereiner 6. Moseley

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