The diagrams below illustrate models of various chemical compounds.

the diagrams suggest that compounds must be
a.
made up of two or more of the same chemical elements only.
b.
made up of only one chemical element.
c.
made up of oxygen and one other chemical element.
d.
made up of two or more different chemical elements.

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

100 points answer quick 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.

The number at the end of an isotope’s name is the number.