Fe
Iron
Atomic Number 26
Transition Metal
Se
Selenium
Atomic Number 34
Nonmetal
Bond Analysis
Electronegativity Difference
0.72
Predicted Bond Type
polar covalent
Relationship
Same period
Property Comparison
| Property | Iron | Selenium |
|---|---|---|
| Atomic Mass | 55.8450 u | 78.9710 u |
| Electronegativity | 1.83 | 2.55 |
| Density | 7.8740 g/cm³ | 4.8090 g/cm³ |
| Melting Point | 1811.0 K | 494.0 K |
| Boiling Point | 3134.0 K | 958.0 K |
| Atomic Radius | 156 pm | 103 pm |
| Ionization Energy | 762.5 kJ/mol | 941.0 kJ/mol |
Selenium
- Block
- p-block
- Period
- 4
- Group
- 16
- Phase at STP
- Solid
- Config
- [Ar] 3d10 4s2 4p4
Ratios
Mass Ratio (Fe/Se)
0.707
Size Ratio (Fe/Se)
1.515