Question

determine what element is denoted by the following electron - configuration: xe 6s². n mg ba as

Explanation:

Step1: Identify Xe's atomic number

Xe (xenon) has an atomic number of 54.

Step2: Analyze the electron - configuration notation

The notation [Xe]6s² means we start with the electron - configuration of xenon and then add 2 electrons in the 6s orbital. The atomic number of the element is the atomic number of Xe plus 2.

Step3: Calculate the atomic number of the element

54 (Xe's atomic number)+2 = 56.

Step4: Identify the element

The element with atomic number 56 is Ba (barium).

Answer:

Ba