Question

choose the element that has the electron configuration. of $1s^{2}2s^{2}2p^{6}3s^{1}$ by selecting the appropriate box on the table. periodic table of elements

Explanation:

Step1: Calculate the total number of electrons

The electron configuration is \(1s^{2}2s^{2}2p^{6}3s^{1}\).
Sum the exponents: \(2 + 2+6 + 1=11\).

Step2: Relate the number of electrons to the atomic number

In a neutral atom, the number of electrons equals the atomic number. So the atomic number \(Z = 11\).

Answer:

Sodium (\(Na\)) (the element with atomic number \(11\) in the periodic table)