Question

note: to answer some of the questions, it may help to reference a periodic table. checkpoint 07 when is an isotope considered stable? (select all that apply.) the isotope emits some form of radiation. the isotopes half - life is too long to be measured. the isotopes half - life is longer than the average human life. the isotope does not emit a form of radiation.

Explanation:

A stable isotope does not emit radiation. Just because an isotope has a long half - life (either too long to measure or longer than the average human life) does not necessarily mean it is stable. Emitting radiation is characteristic of unstable isotopes.

Answer:

The isotope does not emit a form of radiation.