Answer:
lithium because it has an atomic number of three(you could have just googled which element has the atomic number 3)
It occurs in oxygen I think
Is that a test? I can’t help if it is
The oxidation state of a free element (uncombined element) is zero. For a simple (monoatomic) ion, the oxidation state is equal to the net charge on the ion. For example, Cl– has an oxidation state of -1. When present in most compounds, hydrogen has an oxidation state of +1 and oxygen an oxidation state of −2.
Answer: 5
Explanation: you divide the distance by the time and get the speed.
