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nincompoop Group TitleBest ResponseYou've already chosen the best response.1
I don't know what you're trying to do.
 one year ago

chemcalc Group TitleBest ResponseYou've already chosen the best response.1
@nincompoop the Element Ir = e + what?
 one year ago

nincompoop Group TitleBest ResponseYou've already chosen the best response.1
could you elaborate what your question is asking? how many electrons does element Iridium have? well in nature, elements are neutral, this means that the number of protons and electrons are equal. look at your periodic table and see how many protons it has, then use that as a reference to indicate how many electrons.
 one year ago

chemcalc Group TitleBest ResponseYou've already chosen the best response.1
As shown on the periodic table, it looks like 192 Ir 77 Now what makes that result if one electron is added @nincompoop
 one year ago

nincompoop Group TitleBest ResponseYou've already chosen the best response.1
Iridium has 77 protons therefore it has 77 electrons the amu is 192 atomic weight = protons + neutrons the + charge indicates that one electron is removed this is why there's more protons (+) than electrons (). if 1 electron is removed then you would have: \[_{77}^{192}Ir^+=76e^\]
 one year ago

nincompoop Group TitleBest ResponseYou've already chosen the best response.1
now if it were: \[_{77}^{192} Ir^=78e^\]
 one year ago

nincompoop Group TitleBest ResponseYou've already chosen the best response.1
do you understand @chemcalc ?
 one year ago

chemcalc Group TitleBest ResponseYou've already chosen the best response.1
yes @nincompoop
 one year ago

nincompoop Group TitleBest ResponseYou've already chosen the best response.1
let me test what you've learned. how many electrons does an iridium have when: \[_{77}^{192}Ir^{+2}\] and when: \[_{77}^{192}Ir^{4}\]
 one year ago

chemcalc Group TitleBest ResponseYou've already chosen the best response.1
75e 81e @nincompoop
 one year ago

nincompoop Group TitleBest ResponseYou've already chosen the best response.1
super! learn something more: ISOELECTRIC this means that Iridium is now isoelectric (the same number of electrons/configuration) as Rhenium (Re) when its electron is 75, and isoelectric as Thallium (Tl) when its electron is 81.
 one year ago

chemcalc Group TitleBest ResponseYou've already chosen the best response.1
Wow, thank you ! @nincompoop
 one year ago
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