Is 2Na plus 2H2O equals 2NaOH plus H2 a balanced equation yes or no?

No. First Na is not a diatomic element so Na2 is not correct. Oxygen is a diatomic element so if it is by itself, there has to be a sibscript of 2. A balanced equation would be 2 Na plus O2---- 2(NaO) plus you cannot have a number in the middle of the product.