What element has a noble gas notation (Xe) 6s2?

| April 8, 2018

Barium has the noble gas configuration [Xe]6s².
You can learn about noble gas configurations at
To work backwards and find the element with a given configuration, you first find the noble gas in .
Xe is element 54.
Your element has two more electrons (and two more protons) than Xe. It must be element 56. Look in the Periodic Table, and
Element 56 is barium, Ba.

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