Acensky 0 #1 October 20, 2004 This is for my Gen. Chemistry class and I need to find how many protons, electrons and neutrons are in each ion. how would I go about find the number of each? 16 O 2- 89 Y 3+ 133 Cs+ 81 Br- I am so confusedGarbage bags do not make good parachutes. Quote Share this post Link to post Share on other sites
wildcard451 0 #2 October 20, 2004 -Atomic Number = # of protons. -Neutral charged particles will have equal protons and electrons. If ion charge is (-) then electrons > protons, and vice versa. Hope that helps. /hated chemistry. Quote Share this post Link to post Share on other sites
champu 1 #3 October 20, 2004 for neutrons you need the atomic weight. take atomic weight - # of protons = # of neutrons. Quote Share this post Link to post Share on other sites
wildcard451 0 #4 October 20, 2004 Oh yeah, missed that part of the thread.......oops! Thanks for adding that one. Quote Share this post Link to post Share on other sites
Acensky 0 #5 October 20, 2004 thanks, this stuff is making my brain hurt from thinking to hard. HeatherGarbage bags do not make good parachutes. Quote Share this post Link to post Share on other sites
jumper03 0 #6 October 20, 2004 CHEMISTRY!!!! *jumper does the happy dance* pm me if you need help. [grunty voice] me likes chemistry [/grunty voice] Scars remind us that the past is real Quote Share this post Link to post Share on other sites
wildcard451 0 #7 October 20, 2004 no one should like chemistry.....it's just not right..... Quote Share this post Link to post Share on other sites
jumper03 0 #8 October 20, 2004 Quoteno one should like chemistry.....it's just not right..... Well I did stay at a holiday inn express last night Scars remind us that the past is real Quote Share this post Link to post Share on other sites
livendive 8 #9 October 20, 2004 The number of protons is always equal to the atomic number. The number of electrons is equal to the atomic number plus or minus any ionic charge. The number of neutrons is equal to the atomic weight (sum of protons and neutrons) minus the atomic number (protons). So let's look at your first example... 16 O 2- Protons = 8 (atomic number of O = 8) Electrons = 10 (atomic number of 8 plus two electrons to get a charge of 2-) Neutrons = 8 (atomic weight of 16 minus 8 protons) Hope this helps. Edit to add: Hey, that was your 100th post...isn't that a beer-worthy event? Blues, Dave"I AM A PROFESSIONAL EXTREME ATHLETE!" (drink Mountain Dew) Quote Share this post Link to post Share on other sites
Acensky 0 #10 October 20, 2004 After working on it last night with help from everyone !!! The lightbulb went off and I understood what I was doing. well not 100% more lie 60% but better then nothing. I think the 100th post is a worthy event. expect to see a lot more of homework help out there. Heather Garbage bags do not make good parachutes. Quote Share this post Link to post Share on other sites
windcatcher 0 #11 October 20, 2004 oooh, dangit, I thought this thread was gonna be about CHEMISTRY...ya know, the dating kind? just joking by the way,,,chemistry and me don't get along very well Mother to the cutest little thing in the world... Quote Share this post Link to post Share on other sites
jumper03 0 #12 October 20, 2004 Quoteoooh, dangit, I thought this thread was gonna be about CHEMISTRY...ya know, the dating kind? just joking by the way,,,chemistry and me don't get along very well BWHAHAHAHAHA.... I guess the reason i like this chemistry is that I got none of the other kind!! Ah well, good thing calculating changes in entropy and enthalpy get me all excited.... JumpScars remind us that the past is real Quote Share this post Link to post Share on other sites
prepheckt 0 #13 October 20, 2004 QuoteQuoteoooh, dangit, I thought this thread was gonna be about CHEMISTRY...ya know, the dating kind? just joking by the way,,,chemistry and me don't get along very well BWHAHAHAHAHA.... I guess the reason i like this chemistry is that I got none of the other kind!! Ah well, good thing calculating changes in entropy and enthalpy get me all excited.... Jump Is it exo or endothermic?"Dancing Argentine Tango is like doing calculus with your feet." -9 toes Quote Share this post Link to post Share on other sites
wmw999 2,589 #14 October 20, 2004 QuoteIs it exo or endothermic? Hell is exothermic. Just thought I'd add a data point Wendy W.There is nothing more dangerous than breaking a basic safety rule and getting away with it. It removes fear of the consequences and builds false confidence. (tbrown) Quote Share this post Link to post Share on other sites
prepheckt 0 #15 October 20, 2004 Classic wendy...Classic..."Dancing Argentine Tango is like doing calculus with your feet." -9 toes Quote Share this post Link to post Share on other sites
Zep 0 #16 October 20, 2004 Very very witty, Now I know where I'm going when I'm done. Exothermic heaven Gone fishing Quote Share this post Link to post Share on other sites
SkydiveNFlorida 0 #17 October 20, 2004 QuoteQuoteIs it exo or endothermic? Hell is exothermic. Just thought I'd add a data point Wendy W. That's can't be proven... hell could actually be endothermic. In fact, that would seem more hell-like to me (and probably others from subtropics or tropics). I can take the heat, baby, but I would probably freeze to death in Ontario. Angela. Quote Share this post Link to post Share on other sites
