Question

determine what element is denoted by the following electron configuration: 1s²2s²2p⁶3s² n mg ba as

Explanation:

Step1: Count total electrons

The electron - configuration is \(1s^{2}2s^{2}2p^{6}3s^{2}\). Calculate the total number of electrons by adding the superscripts. \(2 + 2+6 + 2=12\).

Step2: Identify element

The atomic number of an element is equal to the number of electrons in a neutral atom. The element with atomic number 12 is magnesium (Mg).

Answer:

Mg