Black Board Snapshots for unit II Lecture in Atomic and Nuclear Physics - On 21.01.2019

Oops ! What a blunder I made Carbon's atomic number is not 12 but 6. My dyslexic brain mixed atomic weight with atomic mass ! Sorry Friends ! Read Carbon(C) as Magnesium(Mg) !

Carbon's Electron Configuration [He] 2s2 2p2
Magnesium's Electron Configuration is [Ne] 3s2