which materials are typically used as thermal insulators? select three options. a. copper b. foam c. ceramic d. wood e. plastic

Sorry i dont understand the question can you rephase it?

The answer is nitrogen-containing bases

13 protons and 14 neutrons.  this also means that the amount of electrons also is 13 because electrons have the same amount as protons..the atomic number means the amount of protons (which effectively tells you the electrons) the atomic mass, tells you the amount of protons and neutrons in the nucleus.hope this .