Question

(Sodium metal reacts with chlorine gas)
1. During the reaction, electrons are transferred from ______________ to ______________,
2. During transfer, the uncharged sodium atoms become charged sodium ions with the formula ___________.
3. During transfer, the uncharged chlorine atoms become charged chlorine ions (chloride) with the formula ____________.
4. The sodium ions and chloride then form a solid ionic compound with the formula ______________ that is called _________________________________.

Answer 1

2Na(s) + Cl2(g) ==> 2NaCl(s)
Na on the left has an oxidation state of zero.(ALL elements in the free state are zero oxidation state or zero charge). On the right it is +1 for each Na atom. Change in oxidation state is zero to +1 or gain of 1 e per atom.
Cl on the left has an oxidation state of zero. On the right it is -1 for each atom. Change in oxidation state is zero to -1 or gain of 1 e per atom.
2. Na^+
3. Cl^-
4. NaCl named sodium chloride.