Sxaxsxa
Sxaxsxa Sxaxsxa
  • 10-09-2021
  • Chemistry
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Help! How is this incorrect?

Help How is this incorrect class=

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tisourwindex
tisourwindex tisourwindex
  • 10-09-2021
on the first one it is supposed to be 18. when you have a +1 charge you subtract it once. how i got 18 tho was from the protons. there was 19 so i subtracted that with 1 and got 18. hope that helped! :)

btw i’m not the best at explaining, i’m sorry :/
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