Which ones are polyatomic and which ones are monoatomic? Fe+2 Al+3 SO4-2 S-2 Sr+2

Na+1 Cu+2 N-3 Cl-1 Br-1

NO3-1 Mg+2 OH-1 O-2 PO3-3

Fe+3 NH4+1 CO3+2 SO3-2 Zn+2

PO4-3 K+1 Ca+2 Cu+1 Ag+1

Energy is released during which phase changes? check all that apply. boiling condensing depositing freezing melting subliming

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What shape would a molecule with two bound groups and two lone pairs have?