How many protons, neutrons, and electrons does b-13 have?

How many protons, neutrons, and electrons are in flouride, nitrogen, boron, beryillium, neon, magnesium, aluminum, helium, carbon, silver, gold, plastic, rubber, and barium each.

With the exception of plastic and rubber, which are made of long chains of atoms, the rest of what you listed are elements. Every element has a specific and unique number of protons and you can tell the number of protons an atom has by its atomic number on the periodic table e.g. nitrogen has the atomic number 7 which means it has 7 protons.  

The number of neutrons a specific element has can vary, but as long as the number of protons is the same it is the same element and has the same chemical properties. For example every helium atom has 2 protons, but naturally it can have 1 or 2 neutrons. Also, usually one form is much more abundant than the other, with helium 99.999% is in the 2 neutron form.  

The number of electrons in an atom can also vary, but if you take a pure sample of the element under normal conditions the number of electrons is equal to the number of protons. When an atom has an equal number of protons and electrons it is called neutral, an ion is formed when electrons are either removed or added.

a:

by the combination of an unlimited number of elements