radioactivity

As nouns the difference between radioactivity and null

is that radioactivity is spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus while null is zero, nil; the cardinal number before einn.

As a letter s

is the letter s with a.

As a noun radioactivity is

spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.

As nouns the difference between activity and radioactivity

is that activity is the state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities while radioactivity is spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.

As nouns the difference between biohazard and radioactivity

is that biohazard is a biological hazard; a source of risk due to some biological factor such as bacteria or human waste while radioactivity is spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.

As nouns the difference between radioactivity and reactivity

is that radioactivity is spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus while reactivity is responsiveness to stimulation.

As nouns the difference between gas and radioactivity

is that gas is goose while radioactivity is spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.

As a noun radioactivity is

spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.