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  1. L

    HSC Hub

    Thanks :) It's pretty pricey too
  2. L

    HSC Hub

    Does anyone have a HSC Hub subscription and it so, is it worthwhile? Thanksssss
  3. L

    Free Radicals

    Hi Guys, I'm kinda confused about free radicals. What actually is so different about them? When drawing the dot structures for oxygen, the only thing that's different is the electron positions. If they're neutral, why are they so reactive? If somebody could explain that would be great :)
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