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O2    
Chromophore \Chro"mo*phore\, n. [Gr. ? color fe`rein to bear.]
(Chem.)
Any chemical group or residue (as {NO2}; {N2}; or {O2}) which
imparts some decided color to the compound of which it is an
ingredient.
[1913 Webster]


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  • O2 - Essential For Living
    Find exclusive offers and discover Switch Up, Flexible Superfast 5G Tariffs, Free Roaming O2 Priority Stay connected, wherever you are
  • O2 Log In → Sign in to your My O2 account
    Log in or register for My O2 and take control of your account wherever you are – with all your information, bills and exclusive customer offers in one place
  • Oxygen - Wikipedia
    They realized that the known reversible reaction 2BaO (s) + O2 (g) ↔ 2BaO2 (s) was deactivated by the formation of barium carbonate from carbon dioxide in the air; treating air to remove the carbon dioxide allowed the reaction be reversed indefinitely
  • Notes on What is oxygen – O₂ - Unacademy
    O2 is the chemical formula for oxygen, which is also known as dioxygen Because oxygen normally joins with another oxygen by establishing a covalent bond, this formula is given
  • O2 - Wikipedia
    O2 (brand), a global brand name owned by the Spanish telecommunications company Telefónica O2 Store, a chain of retail stores owned and operated by Telefónica Europe, with regional subsidiaries:
  • Sign in or register for Virgin Media O2
    Sign in or register for Virgin Media O2 Enter your email address to get started Learn more
  • Help Support - O2
    Get help and support with all the things that matter most to you – from understanding your bill and using your phone abroad to managing your O2 account online
  • Your O2 Account – Help Support
    Get help with everything to do with your O2 account – with information on your billing and usage, how to use My O2, and what to do if you're looking to upgrade
  • Phone Deals | Pay Monthly Mobile Phone Contracts - O2
    At O2, we have a range of Flip and Foldable phones available Whether you're looking for the new Samsung Galaxy Z Flip8, the Google Pixel 11 Pro Fold, or the latest iPhone Duo, you can shop our range of deals and contracts today
  • O2 Shop Online
    Find O2 offers on iPhone, Samsung and more Reduce your monthly bill by spreading the cost up to 36 months Flex your data up or down monthly on Pay Monthly devices





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