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emmynimmy

  • one year ago

Given that oxygen has an atomic number of 8, determine how many protons and neutrons are in the isotope 18O, or oxygen-18.

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  1. Photon336
    • one year ago
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    @emmynimmy what do you think the answer is

  2. Photon336
    • one year ago
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    okay so i'll show you how to do it step by step if you're willing to actively participate

  3. Photon336
    • one year ago
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    |dw:1443668072504:dw|

  4. anonymous
    • one year ago
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    K

  5. anonymous
    • one year ago
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    I get that

  6. Photon336
    • one year ago
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    @emmynimmy so far follow?

  7. anonymous
    • one year ago
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    yes

  8. emmynimmy
    • one year ago
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    Yeah I understand.

  9. Photon336
    • one year ago
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    ok now for every element we have two numbers: the atomic number and the mass number. usually for every element the number of protons = the number of electrons. so positive charges = negative charges which makes it neutral. |dw:1443668234799:dw|

  10. emmynimmy
    • one year ago
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    yeah I understood that

  11. anonymous
    • one year ago
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    That makes sense, so positive cancels negative got it

  12. Photon336
    • one year ago
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    okay great @8054manofwar and @emmynimmy next thing

  13. Photon336
    • one year ago
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    what we need to do is for oxygen 18.

  14. Photon336
    • one year ago
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    |dw:1443668415142:dw| can you guys tell me how many protons and electrons are in oxygen based off of what i said? @emmynimmy @8054manofwar

  15. Photon336
    • one year ago
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    and also how do you know this?

  16. anonymous
    • one year ago
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    there are 8 p+ and 8 e- right?

  17. emmynimmy
    • one year ago
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    I knew that protons and neutrons equaled. I think that the number is 8protons and 10 neutrons

  18. Photon336
    • one year ago
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    @8054manofwar @emmynimmy yep you guys got it and last thing

  19. emmynimmy
    • one year ago
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    wait so was my answer correct?

  20. anonymous
    • one year ago
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    Did you use the ask the (MAN) formula

  21. Photon336
    • one year ago
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    to find the number of neutrons, you ALWAYS subtract the top number from the bottom that is the mass number from the atomic number. |dw:1443668631307:dw| so this element has 8 protons, 8 electrons and 10 neutrons. @emmynimmy @8054manofwar

  22. Photon336
    • one year ago
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    do you guys know about cations and anions?

  23. emmynimmy
    • one year ago
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    awesome! Thank you so much!

  24. anonymous
    • one year ago
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    yes I do

  25. emmynimmy
    • one year ago
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    sorry guys i know this isn't a chem question but i was wondering how can i post another question I have?

  26. Photon336
    • one year ago
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    ok well what about this SAY if I had fluorine with a minus charge how many protons and electrons does this have? |dw:1443668752177:dw|

  27. Photon336
    • one year ago
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    @emmynimmy you can post it here or open up another question

  28. emmynimmy
    • one year ago
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    how do i open another question?

  29. Photon336
    • one year ago
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    well you would have to close this question

  30. emmynimmy
    • one year ago
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    oh ill just ask you guys then! So I don't know this, the question is If an atom of hydrogen loses its electron, what is its charge?

  31. anonymous
    • one year ago
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    17 p+ and 18 e-

  32. anonymous
    • one year ago
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    Its charge would be positive I think

  33. emmynimmy
    • one year ago
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    +2 –1 +1 0

  34. emmynimmy
    • one year ago
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    thats the answer choices.

  35. Photon336
    • one year ago
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    @8054manofwar yeah your correct @emmynimmy okay for this, lets look at this

  36. Photon336
    • one year ago
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    @emmynimmy where is hydrogen located? first of all on the periodic table? and what is it's atomic number?

  37. emmynimmy
    • one year ago
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    atomic number is 1

  38. Photon336
    • one year ago
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    can you tell me what this means in terms of how many electrons and protons @emmynimmy what about you @8054manofwar

  39. anonymous
    • one year ago
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    It has 1 p+ and 1 e- and then 0 neutrons right

  40. emmynimmy
    • one year ago
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    yeah what they said ^^ sorry i was typing.

  41. Photon336
    • one year ago
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    @emmynimmy do you agree with @8054manofwar why is he right so far?

  42. emmynimmy
    • one year ago
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    yes

  43. Photon336
    • one year ago
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    but why?

  44. emmynimmy
    • one year ago
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    Idk i read it.

  45. Photon336
    • one year ago
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    so how many protons and electrons does hydrogen have @emmynimmy

  46. emmynimmy
    • one year ago
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    one

  47. Photon336
    • one year ago
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    ok so if hydrogen loses it's electrons what is it's charge now?

  48. emmynimmy
    • one year ago
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    0

  49. Photon336
    • one year ago
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    no

  50. emmynimmy
    • one year ago
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    oh 1

  51. anonymous
    • one year ago
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    Wait I know the answer emmy. Use the MAN formula

  52. emmynimmy
    • one year ago
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    because there is one proton

  53. emmynimmy
    • one year ago
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    right?

  54. Photon336
    • one year ago
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    so the first thing you do is this, you write out how many protons and electrons hydrogen has |dw:1443669221490:dw|

  55. anonymous
    • one year ago
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    YEAH!!!

  56. anonymous
    • one year ago
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    Mann- Atomic Number=Neutrons

  57. Photon336
    • one year ago
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    @emmynimmy the number of protons is always equal to the number of electrons. right it out like this protons have a positive charge + electrons have a negative charge - follow?

  58. emmynimmy
    • one year ago
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    yes

  59. emmynimmy
    • one year ago
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    so would it be 1+?

  60. Photon336
    • one year ago
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    yes can you tell me why though? by writing it out

  61. emmynimmy
    • one year ago
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    because there is still a proton.

  62. Photon336
    • one year ago
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    exactly,

  63. emmynimmy
    • one year ago
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    awesome thank you both so much you guys are awesome!

  64. anonymous
    • one year ago
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    Tank u

  65. Photon336
    • one year ago
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    yeah no problem take care

  66. anonymous
    • one year ago
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    See u later guys

  67. Photon336
    • one year ago
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    last thing though Cation's and Anions, the number of electrons changes

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