Many radioactive atoms that have large masses undergo radioactive decay by releasing a particle that is identical to a helium-4 nucleus. what changes in the original atom are expected as a result of this natural phenomenon? the atomic number and the mass number will decrease. the atomic number and the mass number will increase. the atomic number will increase, and the mass number will decrease. the atomic number will decrease, and the mass number will increase.

The atomic number and the mass number will decrease.

Explanation:

The mass number of the original atom decreases by 4 while the atomic number decreases by 2

For example, Polonium-214 decays into lead-210 by the release of an alpha particle as follows:

²¹⁴₈₄Po→  ²¹⁰₈₂ Pb +⁴₂He +energy.

Energy is always released during radioactive decay that is why it is included in the equation.

The answer to your question is option A.

Explanation:

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl