Has 9 protons and 9 electrons in per atom.........
A) Ca(OH)2 + CO2 —> CaCO3 + H2O
B) when Ca(OH)2 is reacted with CO2, the CaCO3 produced is a precipitate which turns the solution milky
Because it has atomic no. = 1 (according to modern periidic table)
I’m pretty the answer would be continental slope. :)
I really hope this helps.