The mass number of the most radioactive uranium isotope is

238

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235

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226

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210

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Solution

The correct option is B 235
Radioactive nuclei:- the nucleus which exhibits the self-spontaneous disintegration, that is the decay of unstable radioactive nuclei. Some examples of radioactive substances are Uranium, Radium, Thorium, Polonium, Neptunium etc.

$_{92} U^{235}$ is radioactive because it is most unstable.

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Similar questions

Which of the following atomic mass of Uranium is the most radioactive?

Give one use each of the following radioactive isotopes :

(a) Uranium-235

(b) Cobalt-60

_{88} R^{288}

3 α -

β -

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