Atomic Properties of As
- Atomic Number of As
- 33
- Atomic Mass of As
- 74.9220 u
- Electron Configuration
- [Ar] 3d10 4s2 4p3
- Electronegativity
- 2.18
- Block
- p-block
- Group
- 15
- Period
- 4
Arsenic has a way of smiling that makes everyone unsure whether to laugh or back away. He enjoys unsettling jokes, dramatic timing, and long, poetic comments that sound suspiciously like foreshadowing. He insists he’s misunderstood. His friends agree — but they also keep him away from snacks.
He appears in minerals, pigments, electronics, and history’s most infamous cautionary tales. He speaks about these with theatrical flair, waving his hands like a storyteller around a campfire.
Arsenic doesn’t try to be dangerous; he just is. But he’s also clever, versatile, and capable of remarkable uses when handled with deep respect. In semiconductors and alloys, he works with precision and surprising discipline.
He enjoys bending the rules of bonding, forming compounds that look ordinary until they absolutely aren’t. “Chemistry,” he says, “should keep you alert.”
He is magnetic in the way storms are: beautiful to watch from a comfortable distance.