The term "atomic age" was first coined in the 1950s primarily because of which of the following factors?

• A. The proposal of the quantum mechanical model of the atom
• B. The discovery of the electron by J.J. Thomson
• C. The invention of the periodic table by Dmitri Mendeleev
• D. The development and use of nuclear weapons during World War II

Answer: (D)

Verified step by step guidance

1. Understand that the term "atomic age" refers to a period marked by significant advancements and impacts related to atomic energy and nuclear technology.
2. Review the historical timeline of atomic theory and technology: the discovery of the electron (late 19th century), the invention of the periodic table (19th century), and the quantum mechanical model (early 20th century).
3. Recognize that while these discoveries were foundational to atomic science, the term "atomic age" specifically relates to the era following the practical application of atomic energy.
4. Identify that the development and use of nuclear weapons during World War II marked the first large-scale, impactful use of atomic energy, which led to widespread societal and scientific changes.
5. Conclude that the "atomic age" was coined primarily because of the development and use of nuclear weapons during World War II, highlighting the profound influence of nuclear technology on global history.