How are the subscripts determined when writing the formula for an ionic compound (ex. CaCl2)?

They did not study the continental drift

You know how the first one if filled up like the objects do the same but with the other categories

The answer is bhope this

Order of filling levels and sublevels of electrons: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²3f¹⁴5d¹⁰6p⁶for an element with 5 electrons in the 3d energy level: full configuration: 1s²2s²2p⁶3s²3p³.