Question

Which equation is balanced?
Responses

2Na + Cl2→NaCl
2 uppercase N lowercase a plus uppercase C lowercase l subscript 2 end subscript rightwards arrow uppercase N lowercase a uppercase C lowercase l

Na + 2Cl2→2NaCl
uppercase N lowercase a plus uppercase C lowercase l subscript 2 end subscript rightwards arrow 2 uppercase N lowercase a uppercase C lowercase l

Na + Cl2→NaCl
uppercase N lowercase a plus uppercase C lowercase l subscript 2 end subscript rightwards arrow uppercase N lowercase a uppercase C lowercase l

2Na + Cl2→2NaCl
2 uppercase N lowercase a plus uppercase C lowercase l subscript 2 end subscript rightwards arrow 2 uppercase N lowercase a uppercase C lowercase l

Answer 1

2Na + Cl2 → 2NaCl

Check: Na: 2 on left, 2 on right. Cl: 2 on left (Cl2), 2 on right (in 2 NaCl).