Dubnium (Db)
Dubnium
Dubnium (Db) is a transition metal in period 7, group 5. Its relative atomic mass is [268] and the molar mass of the atom is [268] g/mol.
Atomic number 105
Atomic mass [268] predicted
Molar mass [268] g/mol
Category Transition metal Unknown
Properties of dubnium
| Atomic number | 105 |
|---|---|
| Symbol | Db |
| Latin name | Dubnium |
| Relative atomic mass | [268] |
| Molar mass | [268] g/mol |
| Group, period, block | 5, 7, d |
| Category | Transition metal |
| State at 20 °C | Unknown |
| Electron configuration | [Rn] 5f¹⁴ 6d³ 7s² |
Electron configuration of dubnium
Electrons per shell
K2L8M18N32O32P11Q2
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁴ 6s² 6p⁶ 6d³ 7s²
Noble-gas notation
105 protons · 105 electrons[Rn] 5f¹⁴ 6d³ 7s²
Formula and compounds of dubnium
Simple substanceDbdubniumMolar mass of Db: [268] g/mol
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Frequently asked questions
The relative atomic mass of dubnium is [268], so the molar mass of the atom is [268] g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁴ 6s² 6p⁶ 6d³ 7s². Noble-gas notation: [Rn] 5f¹⁴ 6d³ 7s².