Question

which element is represented by the following electron configuration: 1s²2s²2p⁶3s²3p² ?
silver
silicon
sodium
selenium

Explanation:

Step1: Calculate total electrons

Add up the exponents in the electron - configuration. $2 + 2+6 + 2+2=14$.

Step2: Identify element by atomic number

The atomic number of an element is equal to the number of electrons in a neutral atom. The element with atomic number 14 is silicon.

Answer:

silicon