1) Golem with 252 Atk and Adamant nature does 42.76-50.51% damage to Linoone with 0 HP and 0 Def.
2) If Linoone is behind screens like Molk suggested, Golem's going to be doing 21.55-25.59% with Sucker Punch, which would just activate Sitrus Berry, basically nullifying the damage. You'd basically need SR and some Spikes down to completely kill it off.
3) WITHOUT Belly Drum, Seed Bomb is a 2HKO. Period. WITH Belly Drum, and factoring in hazards, it's an OHKO.
EDIT: Nvm, Golem is taking 3-4 Seed Bomb's without Belly Drum. So basically Golem can take you out if you switch into it with screens, but it can't switch into you if you've Belly Drum'd up.
DOUBLE EDIT: Oops, on that last edit I had Reflect up for Golem, disregard it. Linoone is taking him out either way.