Cation Vs. Anion  [ENDORSED]

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Parsia Vazirnia 2L
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Cation Vs. Anion

Postby Parsia Vazirnia 2L » Tue Oct 18, 2016 3:53 pm

How do you know if an element is a cation or an anion?

Andrew Nguyen 3G
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Re: Cation Vs. Anion

Postby Andrew Nguyen 3G » Tue Oct 18, 2016 3:59 pm

If an element has a positive or a negative superscript, it is an ion (Fe 2+, Ca2+, Cl- are some examples). Cations are positive. Anions are negative. These positive and negative characteristics are caused by less or extra electrons.

Parsia Vazirnia 2L
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Re: Cation Vs. Anion

Postby Parsia Vazirnia 2L » Tue Oct 18, 2016 4:50 pm

yes I understand that but like how would you know that Fe has a +2 charge and same goes with Ca2+, Cl-

Ruiz Samantha 2C
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Re: Cation Vs. Anion  [ENDORSED]

Postby Ruiz Samantha 2C » Tue Oct 18, 2016 5:44 pm

(Cations) Group 1 elements will have a +1, group 2 elements will have +2, and group 3 as +3, group 4 as +4 because they are losing an electron.
(Anions) Group 15 as -3, group 16 as -2 and group 17 as -1 because they are gaining 1 electron.
Group 18, the noble gases are stable so they do not have a + or -
Attachments
periodic_tableions.gif

Mirian_Garcia_2G
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Re: Cation Vs. Anion

Postby Mirian_Garcia_2G » Tue Oct 18, 2016 7:18 pm

While a cation is an ion with a positive charge, an anion has a negative charge. Examples of cations include Sodium (Na+) and Lead (Pb2+). Examples of anions include Nitride (N3-) and Hydride (H-). Try thinking if it this way: cations have more protons than electrons, while anions have more elections than protons. Maybe this can also help: AN(negative)ION & CAtION (the t can be seen as a + sign).

Parsia Vazirnia 2L
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Re: Cation Vs. Anion

Postby Parsia Vazirnia 2L » Tue Oct 18, 2016 8:56 pm

Ruiz Samantha 3E wrote:(Cations) Group 1 elements will have a +1, group 2 elements will have +2, and group 3 as +3, group 4 as +4 because they are losing an electron.
(Anions) Group 15 as -3, group 16 as -2 and group 17 as -1 because they are gaining 1 electron.
Group 18, the noble gases are stable so they do not have a + or -


What about for the transition metals?

Ruiz Samantha 2C
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Re: Cation Vs. Anion

Postby Ruiz Samantha 2C » Tue Oct 18, 2016 9:18 pm

Parsia Vazirnia 1F wrote:
Ruiz Samantha 3E wrote:(Cations) Group 1 elements will have a +1, group 2 elements will have +2, and group 3 as +3, group 4 as +4 because they are losing an electron.
(Anions) Group 15 as -3, group 16 as -2 and group 17 as -1 because they are gaining 1 electron.
Group 18, the noble gases are stable so they do not have a + or -


What about for the transition metals?



So in high school our teacher didn't really touch on transition metals because he said they are a little more complex and some of them have exceptions but I found this picture online. Hope it helps..
Attachments
ions.gif


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