CREATE TABLE table_13078 ("Helium" TEXT, "Neon" TEXT, "Argon" TEXT, "Krypton" TEXT, "Xenon" TEXT, "Radon" TEXT)

Wha argon has helium of 1.0000684?
SELECT "Argon" FROM table_13078 WHERE "Helium" = '1.0000684'
SELECT "Argon" FROM "table_13078" WHERE "Helium" = '1.0000684'