What is the element name and reactivity of an atom with 17 protons and 7 valence electrons?

Answer: the name of the element is chlorine. It is highly reactive

Explanation:

atoms are made up of electrons and protons and according to the periodic table chlorine is the element having 17 protons and 7 valence electrons.

Chlorine is a member of the halogen family. In the periodic table they are located in group 17 along with other halogens. Chlorine is one of the active elements. They react with all the elements except for the noble gases. Chlorine reacts vigorously with other elements due to abundant of valence electrons. After fluorine, chlorine ranks as the highest reactive element.