Question

Oxygen will always form an ionic compound in a 2:1 ratio with the what element?

Which two elements can have different charges depending on the compound they are found in?

Answer 1

Hydrogen H

Transition metals & non metals

Step-by-step explanation:

Transition metals : think rust & copper turning green

non metals : think water H2O

Transition metals are in the "d-block", of the periodic table. ex like iron (Fe), copper (Cu), silver (Ag), & gold (Au)

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