1 / 64

Atoms and Ions

Atoms and Ions. 2 _____. 2 _______. In a Neutral Atom of an Element: The # of _________(-) = The # of _______(+). This represents an ____ of the element ________ ( __P’s & __ e - ’s). We have now taken one electron away from Lithium!.

uttara
Download Presentation

Atoms and Ions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Atoms and Ions 2 _____ 2 _______ In a Neutral Atom of an Element: The # of _________(-) = The # of _______(+)

  2. This represents an ____ of the element ________ ( __P’s & __ e-’s)

  3. We have now taken one electron away from Lithium!

  4. It still has _ Protons, but now only _ electrons! (Neutrons haven’t changed)

  5. This is no longer called “A Lithium Atom”. It is now called a Lithium ___.

  6. + - - + + Because Protons are Positive (+) and Electrons are Negative (-), this Lithium Ion has 3+’s and 2 –’s.

  7. + - - + + Because Protons are Positive (+) and Electrons are Negative (-), this Lithium Ion has 3+’s and 2 –’s. It has a “Net Charge” of __. ( +3 and –2 = __)

  8. An Ion is an atom in which # of ________ # of ________ (Neutrons don’t matter here) An Ion can also be defined as an atom with a ____ _______ (Protons or Electrons are “left over”)

  9. + A Lithium ___ is shown as having a net +1 charge.

  10. + Li+ The symbol for a Lithium Ion is ___

  11. (Take out your Periodic Table!) A Neutral Sodium (Na) Atom has ____ Protons(+) and ___ Electrons(-)

  12. Has __ Electrons(-) around the outside. Na Has __ Protons(+) in the Nucleus (Take out your Periodic Table!) A Neutral Sodium (Na) Atom has __ Protons(+) and __ Electrons(-)

  13. Has __ Electrons(-) around the outside. Na Has __ Protons(+) in the Nucleus A Neutral Sodium atom has a net charge of _____

  14. OKAY. Let’s REMOVE an electron from the Sodium Atom!

  15. It still has __ Protons(+), but now it only has __ Electrons(-) (There is ONE P(+) left over!) Has __ Electrons(-) around the outside. Na Has __ Protons(+) in the Nucleus

  16. It still has __ Protons(+), but now it only has __ Electrons(-) (There is ONE P(+) left over!) The NET CHARGE is__ Has __ Electrons(-) around the outside. Na Has __ Protons(+) in the Nucleus

  17. It still has __ Protons(+), but now it only has __ Electrons(-)(There is ONE P(+) left over!)The NET CHARGE is__ A Sodium Ion has the symbol ___ Has __ Electrons(-) around the outside. Na Has __ Protons(+) in the Nucleus

  18. (Take out your Periodic Table!) A Neutral Magnesium (Mg) Atom has ____ Protons(+) and ___ Electrons(-)

  19. Has __ Electrons(-) around the outside. Mg Has __ Protons(+) in the Nucleus (Take out your Periodic Table!) A Neutral Magnesium (Mg) Atom has __ Protons(+) and __ Electrons(-)

  20. Magnesium tends to easily lose 2 electrons!

  21. It now has __ Protons(+) and __ Electrons(-) Has __ Electrons(-) around the outside. Mg Has __ Protons(+) in the Nucleus

  22. The NET CHARGE on this Magnesium ion is now _______ And the symbol for a Magnesium ion is: _________

  23. So an Mg2+ ion has ___Protons(+) and ___Electrons(-)

  24. So an Mg2+ ion has __ Protons(+) and __ Electrons(-) The ATOMIC NUMBER on the Periodic Table If the NET CHARGE is 2+, it means it has 2LESS Electrons than Protons! (Protons don’t change, only Electrons!)

  25. An Al3+ ion has ___Protons(+) and ___Electrons(-)

  26. So an Al3+ ion has __ Protons(+) and __ Electrons(-) The ATOMIC NUMBER on the Periodic Table If the NET CHARGE is 3+, it means it has 3LESS Electrons than Protons! (Protons don’t change, only Electrons!)

  27. Electrons can be ADDED to Neutral Atoms to make IONS. If an Ion has MORE Electrons(-) than Protons(+), the NET CHARGE on that ion is (positive/negative) ___________

  28. (Take out your Periodic Table!) A Neutral Fluorine (F) Atom has ____ Protons(+) and ___ Electrons(-)

  29. A Neutral Fluorine (F) Atom has __ Protons(+) and ___ Electrons(-) Has __ Electrons(-) around the outside. F Has __ Protons(+) in the Nucleus

  30. So a Neutral Fluorine Atom (9P’s and 9e-’s) has a NET CHARGE of _______

  31. If we add ONE Electron to a Neutral Fluorine Atom, it will now have ___P’s(+) and ___e-’s(-) and the NET CHARGE on the ion will be ___. The symbol for a Fluoride Ion is ______

  32. The ion O2- has ___Protons and ___Electrons.

  33. The ion O2- has __ Protons and __ Electrons. This is the ATOMIC NUMBER of Oxygen A NET CHARGE of 2- means it has 2 MORE Electrons(-) than Protons(+)

  34. The ion As3- has ___Protons and ___Electrons.

  35. On the top right of each element on the Periodic Table is the ______ ________ of the most common ion of each element.

  36. The top left on the Periodic Table shows the ______ NUMBER or # of ________.

  37. In a Neutral Atom (Atom) of an Element, the # of e-’s = # of P’s So a (neutral) potassium atom has ___ protons and ___ electrons

  38. The NET CHARGE on a potassium ION is + (means +1) This means that there is ONE LESS electron than protons This means that there is ONE LESS electron than protons So a potassium ION has ___ protons and ___ electrons

  39. The NET CHARGE on a Scandium ION is 3+ (means +3) This means that there is ONE LESS electron than protons This means that there are THREELESS electrons than protons So a Scandium ION has __ protons and __ electrons

  40. Iron (Fe) can form TWO DIFFERENT ions: One with a net charge of 3+

  41. Iron (Fe) can form TWO DIFFERENT ions: One with a net charge of 3+ This ion Fe3+ would have __ Protons and __ Electrons

  42. Iron (Fe) can form TWO DIFFERENT ions: The other ion would have a net charge of 2+( Iron(II) )

  43. Iron (Fe) can form TWO DIFFERENT ions: The other ion would have a net charge of 2+( Iron(II) ) This ion Fe2+ would have __ Protons and __ Electrons

  44. Negative Ions (Ions of NON-METALS) change the ending of their names to IDE, So Cl- is called a CHLORIDE ion.

  45. The NET CHARGE on a Chloride ION is - (means -1) This means that there is ONE LESS electron than protons This means that there is ONE MORE electron than protons So a chloride ION (Cl-) has ___ protons and ___ electrons

  46. The NET CHARGE on a Sulphide ION is 2- (means -2) This means that there is TWOMORE electrons than protons This means that there is ONE LESS electron than protons So a Sulphide ION (S2-) has __ protons and __ electrons

  47. A Sulphur atom has __ Protons and__ Electrons.

  48. Remember, this means the NET CHARGE on an ION, not on an ATOM

  49. Use your Periodic Table to find the # of Protons and # of Electrons in each of the following:

  50. Remember that given Nuclear Notation, we can find the number of Protons and Neutrons:

More Related