Which element of group 13 has the atomic number 113 and its electronic configuration is [Ra] 5f6d77p?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Nihonium.
- The element with atomic number 113 belongs to group 13 of the modern periodic table and is known as Nihonium.
- Its electronic configuration is correctly written as [Ra] 5f¹⁴ 6d¹⁰ 7s² 7p¹, although the simplified form [Ra] 5f6d7 7p is sometimes used in questions.
- Nihonium is a synthetic, superheavy element and was discovered in 2003 by Japanese scientists, making it the first element discovered in Asia.
- Due to its instability, it exists only in laboratories. Its placement in group 13 is based on its valence electron configuration, matching that of elements like Gallium, Indium, and Thallium.