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When a radio active isotopes "88Ra^228 d...

When a radio active isotopes `"_88Ra^228` decays in series by the emission of three `alpha`-particles and a `beta`-particle, the isotopes finally formed is ...

A

`"84X^220`

B

`"_86X^222`

C

`"_83X^216`

D

`"_83X^215`

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SARAS PUBLICATION-MODEL QUESTION PAPER 1-EXERCISE
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  11. When a radio active isotopes "88Ra^228 decays in series by the emissio...

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  12. A position is emitted by a radio active nucleus of at omic number 90.T...

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