Question

which series in radioactive in nautre​

Answer 1

Explanation:

The basic natural radioactive elements are included into four radioactive series as shown in Table I. These are: thorium series, neptunium series, uranium series and uranium-actinium series. All of radioactive series articles are bond by irreversible reciprocal transformations.

Answer 2

Answer:

$\huge\underline{\pink{A}\blue{N}\purple {S}\orange{W}\red{E}\blue{R}}$

The basic natural radioactive elements are included into four radioactive series as shown in Table I. These are: thorium series, neptunium series, uranium series and uranium-actinium series. All of radioactive series articles are bond by irreversible reciprocal transformations.Three main decay chains (or families) are observed in nature, commonly called the thorium series, the radium or uranium series, and the actinium series, representing three of these four classes, and ending in three different, stable isotopes of lead.