Valence Electrons in Thorium (Th)
Calculate the number of valence electrons in Thorium using its electron configuration step by step.
Valence Electrons in Thorium
Determine the number of valence electrons in Thorium (Th, Element 90)
Step 1: Look up the electronic configuration for Thorium
The abbreviated (condensed) ground electronic configuration for Thorium is:
Calculate Electronic Configuration for Thorium
Step 2: Identify the outermost electrons using the electronic configuration
Electrons in all the atomic orbitals are the outermost electrons:
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 |
|---|
The outermost electrons with the largest principal quantum number (in this case, n = 0) are valence electrons.
Answer
Thorium (Th) has 0 valence electron(s).
