Chem questions

[Kenny Pollock 10+ year member]

Not mad because he "thought of it," angry because like most people he's not willing to think his way through something. Like many members of the forum, I've kicked my *** through college (and a shit load of chemistry to boot), earning my grade.

I know you got a near 4.0 with Chem, and I appreciate your guidance. But you're making assumptions, that, because people posted answers that that's what I was looking for. I'm looking for help, a tutor... and you just helped me with my last question. Thank you.

 

[Kenny Pollock 10+ year member]

I'm trying to figure out how to solve these... no one is giving me steps...

What is the charge for the ion of magnesium?

+1

+2

-1

-2

What is the charge for the ion of fluorine?

+1

+2

-1

-2

 

[profoundwill 10+ year member]

Mg +2, F -1

 

[Kenny Pollock 10+ year member]

Mg +2, F -1

How did you get that answer?

 

[Flipx99 5,000+ posts]

chemistry sucks.

 

[Kenny Pollock 10+ year member]

chemistry sucks.

Indeed it does //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif
SOMEONE, how would I come up with the answers for

What is the charge for the ion of cesium?

+1

+2

-1

-2

What is the charge for the ion of strontium?

+1

+2

-1

-2

 

[profoundwill 10+ year member]

All the elements on the first row will have a +1 charge and all the elements on the second row will have a +2 charge.

All the elements on the 17th row will have a -1 charge and the elements one the 16th row will have -2 charge.

The elements on the 18th are noble gasses and have no charge

 

[profoundwill 10+ year member]

Let me know if you need any more help I am pretty good in chemistry

 

[Bloodstalker999 10+ year member]

All the elements on the first column will have a +1 charge and all the elements on the second column will have a +2 charge.
All the elements on the 17th column will have a -1 charge and the elements one the 16th column will have -2 charge.

The elements on the 18th column are noble gasses and have no charge

Fixed for ya

 

[Kenny Pollock 10+ year member]

Thanks guys, and Blood, good catch...I noticed that

profound: I appreciate it!!

 

[swimfreak26 10+ year member]

The goal is to "fill" the valence shell with electrons (ie 8). Chlorine for example, has 2 3s electrons and 5 2p electrons. In order to reach 8, and thus an "Argon core," you need to add an electron - and since the electron's unit charge is negative, you get a -1 charge on chlorine in it's ionic form.

This generally holds true for first and second group metals, and for the halides...but not for transition metals.