Cl is number 17 in the periodic table.
Every element is ordered by their atomic number (proton number) so it has 17 protons
The answer is (NH4)2O
the answer is b because sedimentary rock can change into metamorphic rock or into igneous rock which metaraphic to ignouans or sedmintary rock hope this help tell me if it is right and can i have a brainliest if this answer is right
