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# Identify the element which has $17$ electrons and $17$ protons?

Last updated date: 21st Mar 2023
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Hint: To identify the element, we will simply look for the atomic number for the element. We know that the atomic number is the number of protons present in an atom.

Here, number of protons $= 17$
The number of protons present in the atom is equal to the atomic number $(Z)$. Hence the atomic number of the element will be $17$. The element with atomic number $17$ is Chlorine.
Here, the number of electrons is equal to the number of protons. This means that the chlorine atom is in ground state or electrically neutral. The symbol of chlorine is $Cl$. It is a yellow-green gas at room temperature. The electronic configuration of chlorine is $[Ne]3{s^2}3{p^5}$.
Chlorine kills bacteria – it is a disinfectant. It is used to treat drinking water and swimming pool water. It is also used to make hundreds of consumer products from paper to paints, and from textiles to insecticides. About $20\%$ of chlorine produced is used to make $PVC$. This is a very versatile plastic used in window frames, car interiors, electrical wiring insulation, water pipes, blood bags and vinyl flooring. Chlorine is used as an oxidising agent and in substitution reactions.