Question

what atom matches this electron configuration? xe 6s²4f¹⁴5d⁹
mercury
gold
platinum
thallium

Explanation:

• First, find the atomic number of Xe (Xenon), which is 54.
• Then calculate the total number of electrons in the given configuration: \(54 + 2+14 + 9=79\).
• The element with atomic number 79 is Gold (Au).

Answer:

Gold