A low-pressure mercury-vapor lamp has a characteristic emission line at 253 nm. Knowing that in one second this lamp is putting out 11.8 Joules of light energy, how many mercury atoms emit a photon during this one second of operation?1. 5.25 x 1020 atoms 2. 7.11 x 1024 atoms 3. 1.50 x 1019 atoms 4. 1.08 x 1017 atoms 5. 7.86 x 10â19 atoms 6. 4.73 x 105 atoms