Question
An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom?

Answer

Electronic configuration of element with atomic no. 12-(2, 8, 2)
So, K-2, L-8, M-2

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free