A radioactive element is an element which is subject to spontaneous degeneration of its nucleus followed by the emission of alpha, beta and gamma particles. All elements with atomic numbers greater than 83 are radioactive.
The given phrases that describe radioactive elements are-
They have a consistent number of particles
- the particles are alpha, beta and gamma particles.
They have a half-life that determines their rate of decay.
Explanation for other options:
Not all elements occur in nature. Radioactive decay rates may not be constant as the decay happens when a radioactive substance emits a particle. It is not possible to predict exactly when a given atom of a substance will emit a particular particle. When the radioactive element release energy and particles, it decays.
You may leave and eat depending on where you work if not then you eat in the designated place for breaks etc. <span />
They are easy to be addicted to
they can hurt your mind
they are so addictive that you use them so frequently (hence the word abusing)
The correct answer is
<span>D. All the populations and the surrounding environment</span>
