How do you balance chemical equations involving diatomics? Can the subcripts be altered for those?

Question

How do you balance chemical equations involving diatomics? Can the subcripts be altered for those?

Answer 1

if you have some examples , email me by clicking on my avatar

here are some

Cl2 & NaI --> NaCl  & I2  ,  becomes:

Cl2 & 2Na --> 2 NaCl & I2

Cl2 & Al I3 --> Al Cl3  & I2  .... becomes:

3Cl2  & 2 Al I3  --> 2 AlCl3  & 3 I2

we won't alter the subscripts of the diatomic molecules, but once they become ions, they are no longer diatomic...

& you use as many Cl- 's as you have positiveness in a Na+ , or a Al+3