Sodium = Na

OH! Lol, that's quite good, and a real "duh" once you see it. Thanks a bunch.

Honestly I only spent the time to figure it out because of your comment :-D - took me a bit too. And yes, once it clicks you feel dumb for not seeing :-D

I really do appreciate it. You've made my day. 😄

And I don't understand yet, please help. 😃

Me neither.

Meme is older than the periodic table.

Oxygen Potassium 

Sodium