Question

give the noble gas electron configuration for rhenium, element 75. 1 62 43 54

Explanation:

Step1: Identify the nearest noble - gas before rhenium

The nearest noble - gas before rhenium (atomic number 75) is xenon (Xe) with an atomic number of 54.

Step2: Determine the remaining electrons

The number of remaining electrons is \(75 - 54=21\).

Step3: Write the electron configuration after the noble - gas core

The electron configuration after [Xe] is \(6s^{2}4f^{14}5d^{5}\).

Answer:

[Xe] 6s2 4f14 5d5