Question

1. Ca atomic number 2. H2O fission 3. nuclear decay element 4. nuclear synthesis fusion 5. η compound 6. positive charge electron 7. e neutron 8. number of protons in nucleus proton

Answer 1

Um, since I'm unsure what your question is, I think you're referring to the Periodic Table, which in that case, it's #6. ;-)

Answer 2

are u asking to match them?