Ah, Chemistry. I love you.

You have rules. Thousands of them. Good for you. You have exceptions to those rules. Thousands of them. Way to go.

Ag is silver. Sure. Why wouldn't it be? And it's electron configuration is [Kr] 5s¹ 4d¹⁰, not [Kr] 5s² 4d⁹. Of course! Rules are for breaking, right? Absolutely. Hell, you keep good company, silver! Half of Period 5 breaks the rules. What's the point in having rules if you're just going to follow them? You incorrigible little imp, you! :)

Chemistry, you're a cheeky monkey and I love you.

P.S. Fuck off.