Question

write the condensed (noble - gas) electron configuration of barium. for multi - digit superscripts or coefficients, use each number in succession.

Explanation:

Step1: Determine the atomic number of barium

Barium has an atomic number of 56.

Step2: Identify the noble gas before barium

The noble gas before barium is xenon (Xe), which has an atomic number of 54.

Step3: Write the remaining electrons

After xenon, there are 2 more electrons. These electrons go into the \(6s\) orbital.

Answer:

\([Xe]6s^{2}\)