<p>i thought that was false and true because of hund’s rule…it fills in the empty d spots first before it begins pairing, but it def does have an even number of electrons</p>
<p>It was a TrueFalse question. The second statement said that an iron atom has an even amount of electrons.</p>
<p>if i omitted 16 but positive on my other answers, will i still have a chance to get in the 700s?</p>
<p>someone please answer? =]</p>
<p>Yeah but it said iron metal. Wouldn’t that be a metallic solid, therefore all electrons are paired?</p>
<p>tneduts: 730 by the sat subject book. BUT as the curves are getting harder I would guess around a very low 700.</p>
<p>Wait does anyone know what the Iron question was? If someone knows the question, I can probably answer it.</p>
<p>thank you!</p>
<p>Statement 1: Iron metal has no unpaired electrons.
Statement 2: An iron atom has an even number of electrons.</p>
<p>on a scale of 1-10 (10 being the hardest) what would u guys rate the test?</p>
<p>So, F,T for Fe prob? :-)</p>
<p>It was FT. Iron has 4 unpaired electrons in the d-orbital (hunds rule) but it does, in fact, have an even number of electrons</p>
<p>Flickor: I am guessing that they are referring to orbitals? In that case statement 1 is false because of hund’s rule by which we have to fill all the orbitals before pairing them up. In it’s ground state iron has 26 electrons. So: FT.</p>
<p>even number is obvious…just count the boxes in the periodic table until the Iron. The d orbital fills half way (5 e-s) before pairing.</p>
<p>on a scale of 1-10 (10 being the hardest) what would u guys rate the test?</p>
<p>That’s true, but they specifically said iron metal, which means it’s a block of iron atoms bonded together, meaning that the electrons are all paired up with electrons from other atoms.</p>
<p>If they were talking about atoms, wouldn’t they have specified, like in the second statement?</p>
<p>Umm, metals usually have a “sea of electrons” so I wouldn’t say that the electrons are all paired up if you are thinking of it that way.</p>
<p>the question for BaSO4 one where it asks about solubility…what was the answer to that one? I and II/ or /I, II, and III??</p>
<p>Took math, chem and physics today. The chem one was much easier than the physics one</p>
<p>@integrated123</p>
<p>I thought if No3 was added, it becomes more soluble so I put Ba+ and SO4-</p>
<p>on a scale of 1-10 (10 being the hardest) what would u guys rate the test?</p>