Which is true about stable isotopes?(1 point)

Responses

A stable nucleus has a similar number of protons and neutrons.

Isotopes are always unstable because they are radioactive.

Isotopes that are naturally occurring in nature are always unstable.

Isotopes with a large difference in neutrons and protons are always stable.

1 answer

The correct statement about stable isotopes is:

A stable nucleus has a similar number of protons and neutrons.

This statement is generally true because stable isotopes often have a balanced ratio of protons to neutrons, which contributes to their stability. The other statements are incorrect. Specifically:

  • Not all isotopes are unstable; many isotopes are stable.
  • Naturally occurring isotopes can be stable or unstable; not all naturally occurring isotopes are unstable.
  • Isotopes with a large difference in neutrons and protons are usually unstable, not stable.

Thus, the first option is the most accurate.

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