Valence Electrons in Dubnium (Db)
Calculate the number of valence electrons in Dubnium using its electron configuration step by step.
Valence Electrons in Dubnium
Determine the number of valence electrons in Dubnium (Db, Element 105)
Step 1: Look up the electronic configuration for Dubnium
The abbreviated (condensed) ground electronic configuration for Dubnium is:
[Rn] 5f14 6d3 7s2
Calculate Electronic Configuration for Dubnium
Step 2: Identify the outermost electrons using the electronic configuration
Electrons in atomic orbitals outside the [Rn] core are the outermost electrons:
5f14 6d3 7s2
Step 3: Use the principle quantum number to identify the valence electrons
Extract the principle quantum number, n, and number of electrons from the electron configuration:
| Electron Configuration | n | Orbital | Number of Electrons |
|---|---|---|---|
| 5f14 | 5 | f | 14 |
| 6d3 | 6 | d | 3 |
| 7s2 | 7 | s | 2 |
The outermost electrons with the largest principal quantum number (in this case, n = 7) are valence electrons.
Answer
Dubnium (Db) has 2 valence electron(s).
