You probably learned in high school chemistry class that core electrons don't participate in chemical bonding.
Research suggests some metals’ semicore electrons may be more active on Earth’s surface than previously thought.
CDSCO issues clarification on approval of combi-packs of certain injections: Gireesh Babu, New Delhi Wednesday, October 1, 2025, 08:00 Hrs [IST] The Central drug regulator has cla ...