GKFix MCQ Question

What is the electronic configuration of the element with atomic number 109 (Meitnerium)?

• A. [Rn] 5f^14 6d^8 7s^1
• B. [Rn] 5f^14 6d^7 7s^2
• C. [Rn] 5f^13 6d^8 7s^2
• D. [Rn] 5f^15 6d^6 7s^2