Identify the element which has 17 electrons and 17 protons?

Identifying the element with 17 electrons and 17 protons:

Atomic number: The atomic number$\left(\mathrm{Z}\right)$ of an atom is equal to the number of electrons or protons present in the neutral state of an atom.

Atomic number = Number of protons = Number of electrons

Given,

Number of protons = 17

Number of electrons = 17

Hence, the atomic number of element = 17

Now, the element with atomic number 17 is Chlorine$\left(\mathrm{Cl}\right)$.

The electronic configuration of chlorine is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^5$.

Chlorine is a disinfectant and it is used to treat drinking water and swimming pool water.

Therefore, the element which has 17 electrons and 17 protons is Chlorine$\left(\mathrm{Cl}\right)$.