vi. In which of the following series all the elements are radioactive in nature?
(a) Lanthanoids
(b) Actinoids
(c) d-block elements
(d) s-block elements
Answers
Answer:
b) Actinoids
Explanation:
f block = actinoids
Answer:
Actinium, the series' initial element, served as the inspiration for the name "actinoids". The letter "An" stands for the actinoid series. Actinium is followed by a family of 14 elements with atomic numbers ranging from 90 to 103, with Thorium (Th) serving as the first actinoid and Lawrencium (Lr) as the final member. Protactinium, Uranium, and eleven additional transuranic elements made artificially by nuclear processes are also included in the series.
Explanation:
The name of the series in which all the elements are radioactive in nature is actinoids.
Actinium through lawrencium is the first 15 chemical elements of the actinoids or actinides group (atomic numbers 89–103). They are quite enormous collectively due to their radioactivity.
The majority of the group's components are man-made, however, a few—including the most well-known member, uranium—occur naturally.
Both uranium and plutonium have been utilized in atomic weapons due to their explosive properties, and they are both now used in nuclear power reactors to generate electricity.
The other options are incorrect.
Hence, The correct option is (b) Actinoids.
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