Answer:
A nitrogen atom must gain three electrons to have the same number of electrons as an atom of the following noble gas, neon. Thus, a nitrogen atom will form an anion with three more electrons than protons and a charge of 3−. The symbol for the ion is N3−, and it is called a nitride ion.
Answer:
C. 2.3 moles of oxygen (O2)
Explanation:
Carbon monoxide is a carbon atom bonded with an oxygen atom. Carbon dioxide is a carbon atom bonded with <em>two</em> oxygen atoms. That's it really, they have different properties but that is significantly more detailed and all a result of their molecular formula.
B) loses electrons and is oxidised
Its oxidation number is 0 in Co(s) and +2 in Co(C2H302)2(aq), hence it gets oxidised