8.1 Write down the electronic configuration of:
Atomic number of copper is 29 and previous noble element is Argon () the electronic configuration of
CBSE Class 12 supplementary admit card out; exam on July 28 for over 2.5 lakh
CBSE Class 12 supplementary exams 2026 datesheet out; test on July 28
Centre, CBSE, NCERT defend NEP three-language policy in SC; seek dismissal of pleas against framework
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