how do you do complete ionic equations?

Question

I dont especially get how Na gets a negative charge. How do you understand that part?

Answer 1

Do you mean how do you find the charges in an ionic equation??
It depends on where the element is on the periodic table - groups 1, 2, 13, and 14 all are negative
group 1 = -1, group2 = -2, group 13 = -3, group 14 = -4 (can be positive)
then, groups 14 - 17 are positive
group 14 = +4, group 15 = +3, group 16=+2, and group 17=+1
Don't worry about groups 3 - 12, they can have more than one charge and do not necessarily follow any type of pattern...
Na is in group 1 i believe - correct me if i am wrong - so it would have a -1 charge. Cl is a halogen - which means its in group 17.
so... your equation would look like : Na - + Cl+ --> NaCl...
I hope I answered your question...

Answer 2

If sodium has a negative charge, then someone hasmisunderstood something.