Home ยป What would be the atomic number of the element in whose atom the K and L shells are full? Atomic Structure MCQs What would be the atomic number of the element in whose atom the K and L shells are full? January 8, 2022 8 Views Q. What would be the atomic number of the element in whose atom the K and L shells are full? A. 10 B. 12 C. 14 D. 16 Answer: 10