Answer:
I think that is called oxalic acid
Explanation:
It is false, the atomic number is the number of protons and/or electrons in an atom on an element.
Answer:
Iron gains three electrons.
The answer is "opposite charges."
The balanced chemical reaction is :

Number of moles of Na,
.
Now, from balance chemical reaction we can see that 1 mole of oxygen reacts with 4 moles of sodium.
So, number of moles of oxygen are :

So, amount of oxygen required is :

Therefore, 5.08 gram of oxygen will react with 14.6 gram of sodium.