use the periodic table to write the electron configuration for barium (ba) in noble - gas notation. ba: 6s²…

use the periodic table to write the electron configuration for barium (ba) in noble - gas notation. ba: 6s² done

use the periodic table to write the electron configuration for barium (ba) in noble - gas notation. ba: 6s² done

Answer

Explanation:

Step1: Locate barium on periodic table

Barium has atomic number 56.

Step2: Identify preceding noble - gas

The noble - gas before barium is xenon (Xe) with atomic number 54.

Step3: Write noble - gas notation

We start with the noble - gas core of xenon and then add the remaining electrons. Barium has 2 electrons in the 6s orbital after the xenon core. So the noble - gas notation is [Xe]6s².

Answer:

[Xe]6s²