Question

The electronic configuration of the element with atomic number 78 is :

• A. \( [Xe]4f^{14}5d^9 6s^1 \)
• B. \( [Kr]4f^{14}5d^8 6s^2 \)
• C. \( [Xe]4f^{14}5d^{10} \)
• D. \( [Kr]4f^{14}5d^{10} \)

Hint:

Transition elements often show exceptions in electronic configuration due to stability of half-filled and fully filled orbitals.

Answer 1

The Correct Option is A