Reactants are what make up the product.
core electrons are those occupying the innermost or lowest energy levels
Answer:
Na
Explanation:
When identifying elements, you only need to look at the number of protons. Elements can have varying numbers of electrons and neutrons, but they can only have one number of protons.
Looking at the periodic table, the elements with 11 protons is sodium (Na).
A vice, you can tighten it and then work on what is held in it without having to hold it still or in the position you want.
