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iheartfood

  • 3 years ago

#1: Which element has the same number of valence electrons as hydrogen (H)? A. helium (He) B. oxygen (O) C. nitrogen (N) D. lithium (Li) ***my answer: D. lithium (Li) is that right?

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  1. jim_thompson5910
    • 3 years ago
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    Li is in group 1, so that sounds right

  2. iheartfood
    • 3 years ago
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    #2: What happens to the atomic size of the elements as one goes from the bottom to the top of a group? A. Atomic size stays the same as one moves from bottom to top in a group. B. Atomic size decreases as one moves from bottom to top in a group. C. Atomic size increases as one moves from bottom to top in a group. D. Atomic size changes randomly as one moves from bottom to top in a group. **my answer: C. is that right??

  3. iheartfood
    • 3 years ago
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    and okay yay :) for #1!!

  4. iheartfood
    • 3 years ago
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    what about 2?

  5. jim_thompson5910
    • 3 years ago
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    bottom = heavier elements top = lighter elements (think of it as like the heavy stuff floats to the bottom of the pool while the light/lighter stuff floats to the top) so as you go from bottom ---> top, the size decreases

  6. iheartfood
    • 3 years ago
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    so my answer is right for #2?? it is C?

  7. iheartfood
    • 3 years ago
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    and #3: Which of the following places the elements in the correct order of increasing first ionization energy? A. Be, Mg, Ca B. Cl, S, P C. P, S, Cl D. F, O, N ***I don't get this one :( please explain! :)

  8. jim_thompson5910
    • 3 years ago
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    no, bottom ---> top means big ----> small

  9. iheartfood
    • 3 years ago
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    so which answer was that?

  10. jim_thompson5910
    • 3 years ago
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    it's not C because it's not increasing

  11. iheartfood
    • 3 years ago
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    so my answer to #2 is this? B. Atomic size decreases as one moves from bottom to top in a group. ??

  12. jim_thompson5910
    • 3 years ago
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    yeah

  13. iheartfood
    • 3 years ago
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    okay and what about #3? lemme repost it so its easier :P

  14. iheartfood
    • 3 years ago
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    #3: Which of the following places the elements in the correct order of increasing first ionization energy? A. Be, Mg, Ca B. Cl, S, P C. P, S, Cl D. F, O, N ***I don't get this one :( please explain! :)

  15. iheartfood
    • 3 years ago
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    do u get #3?

  16. jim_thompson5910
    • 3 years ago
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    have a look at this site http://www.shodor.org/chemviz/ionization/students/background.html

  17. iheartfood
    • 3 years ago
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    idk still... i use the equation?

  18. jim_thompson5910
    • 3 years ago
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    no look at the chart

  19. jim_thompson5910
    • 3 years ago
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    of ionization energies

  20. iheartfood
    • 3 years ago
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    oaky so bottom to top, left to right?

  21. jim_thompson5910
    • 3 years ago
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    yeah it looks it

  22. iheartfood
    • 3 years ago
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    okay, so my answer is C. P, S, Cl ??

  23. iheartfood
    • 3 years ago
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    it goes left to right in the periodic table.. :/ is that the answer?

  24. jim_thompson5910
    • 3 years ago
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    looks perfect

  25. iheartfood
    • 3 years ago
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    yay! :) thanks!

  26. iheartfood
    • 3 years ago
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    yay! :) thanks!

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