nonradioactive

Thân thiện

A scientist handles a nonradioactive sample in the laboratory.

Definition

Adjective: * Not radioactive: Describes a substance, material, or element that does not exhibit radioactivity. It does not spontaneously emit particles or energy from the decay of its atomic nuclei.

Usage

The word "nonradioactive" is used to specify the absence of radioactive properties. It is often employed in scientific, medical, and industrial contexts to distinguish safe or stable materials from their radioactive counterparts. * It typically precedes a noun (e.g., a nonradioactive isotope). * It can be used as a predicate adjective following a linking verb like "is" or "are" (e.g., The sample is nonradioactive).

Examples

• For safety, the laboratory uses nonradioactive tracers in training exercises.
• The geologist confirmed that the rock samples were completely nonradioactive.
• A nonradioactive form of the element was used as a control in the experiment.
• This device can detect both radioactive and nonradioactive materials.

Advanced Usage

• Scientific Contrast: The term is fundamental in nuclear chemistry and physics to differentiate between isotopes. For instance, carbon-12 is a nonradioactive (stable) isotope, while carbon-14 is radioactive.
• Medical Imaging: Some diagnostic techniques use nonradioactive contrast agents, while others (like PET scans) require radioactive ones.

Variants and Related Words

• Non-radioactive: An alternative spelling with a hyphen. Both "nonradioactive" and "non-radioactive" are acceptable.
• Stable: In the context of isotopes, "stable" is a direct synonym for nonradioactive.
• Inert: While sometimes used colloquially, "inert" more precisely means chemically unreactive, not specifically nonradioactive.
• Radioactive: The direct antonym.

Synonyms

• Stable (specifically for isotopes/nuclides)
• Radiation-free

Antonyms

• Radioactive
• Hot (slang in certain contexts)

Related Phrases/Compounds

• Nonradioactive isotope: A stable form of an element that does not decay.
• Nonradioactive waste: Waste material that does not contain radioactive substances, as opposed to nuclear or radioactive waste.

Học thuật

Adjective

1. not radioactive