Which of these rules are applicable for naming covalent compounds?

1.metal name + nonmetal name + suffix –ide

2.nonmetal name + nonmetal name + suffix –ide

3.metal name + nonmetal name + suffix –ite

4.nonmetal name + nonmetal name + suffix –ite

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

What is i fracture in the crust called when land move up, down or sideways

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false