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Stephen Isienyi · Answer 1 · 2018-10-19T22:43:59+0000

Answer: The mass number of daughter isotope (Radon) is 210 u

Step-by-step explanation:

Alpha decay is defined as the decay process in which alpha particle is released. In this process, a heavier nuclei decays into a lighter nuclei. The alpha particle released carries a charge of +2 units and a mass of 4 units.

In this decay process, the atomic number of the atom decreases by 2 units and the mass number decreases by 4 units.

The chemical equation for alpha decay of Radium-214 isotope follows

$_(88)^(214)\textrm{Ra}\rightarrow _(86)^(210)\textrm{Rn}+_2^4\alpha$

The daughter isotope formed is Radon-210. The mass number of formed isotope is 210 u

Hence, the mass number of daughter isotope (Radon) is 210 u

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