Question

storyline 1 exam
write the name of the element with the electron configuration $1s^{2}2s^{2}2p^{2}$.
be sure to enter the name of the element and not the elemental symbol.

Explanation:

Step1: Calculate the total number of electrons

The electron configuration is \(1s^{2}2s^{2}2p^{2}\). The sum of the superscripts gives the number of electrons: \(2 + 2+2=6\).

Step2: Relate the number of electrons to the atomic number

In a neutral atom, the number of electrons is equal to the atomic number. So the atomic number \(Z = 6\).

Step3: Identify the element

Looking at the periodic table, the element with atomic number \(6\) is carbon.

Answer:

carbon