What is the half equation for the following ? please help me exam soon !

2 half equations for the following.
1 ) calcium reacting with chlorine to form calcium chloride.
2) Magnesium reacting with fluorine to form magnesium fluride.
3) Sodium reacting with nitrogen to form sodium nitride.

please write down 2 half equations for each of the above redox reactions .


thank you soo much !!

Ca + Cl2---> CaCl2
Ca ---> Ca+2 2e-
Cl2 + 2e----2Cl-

Mg + F2--> MgF2
Mg-->Mg+2 + 2e-
F2 + 2e---2F-

6Na + N2--> 2Na3N
Na--> Na+1 + 1e- to balance mult by 6= 6Na---> 6Na+1 + 6e-1
N2 + 6e- ----> 6N-3