Caesium

• India's Strategic Shift in Royalty Rates for Critical Minerals
  
  Understanding the Impact of Revised Royalty Rates on India's Mineral Industry
  https://www.onlineupscinstitute.com/current-affair/indias-strategic-shift-in-royalty-rates-for-critical-minerals
• Unique Properties of Caesium and Its Importance in Atomic Timekeeping
  
  Exploring the Science Behind Caesium Atomic Clocks
  https://www.onlineupscinstitute.com/current-affair/unique-properties-of-caesium-and-its-importance-in-atomic-timekeeping