Valence Electrons in Meitnerium (Mt)

Valence Electrons in Meitnerium

Determine the number of valence electrons in Meitnerium (Mt, Element 109)

Step 1: Look up the electronic configuration for Meitnerium

The abbreviated (condensed) ground electronic configuration for Meitnerium is:

[Rn] 5f¹⁴ 6d⁷ 7s²

Calculate Electronic Configuration for Meitnerium

Step 2: Identify the outermost electrons using the electronic configuration

Electrons in atomic orbitals outside the [Rn] core are the outermost electrons:

5f¹⁴ 6d⁷ 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:

The outermost electrons with the largest principal quantum number (in this case, n = 7) are valence electrons.

Answer

Meitnerium (Mt) has 2 valence electron(s).