Periodic table questions?
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Transition metals are stable.  Mercury is a metallic liquid at room temperature.  Diamond and graphite are allotropes of carbon.  H, N, O, F, Cl, Br, I, At form diatomic molecules.  He, Ne,Ar, Kr, Xe, Rn are monoatomic gases at room temp.
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Here is a great site, made specially for teachers, that has many tutorials, plus links to others\n\nGood luck\nhttp://sciencepage.org/chem.htm
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By "shells," do you mean the energy levels of the electron orbitals?  If that's what you mean, all you do is look on the period table and count how many rows from the top the element is.  So H and He each have one electron shell, C, N, O, F, etc. all have two, Si, B, Na, Cl, etc. all have three, and so on.  Sorry about the scattered examples (I was listing them by memory), but hopefully you get the idea.
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1) 2Al + Fe2O3=Al2O3 + 2Fe\n2) 8.53g BaCl2*(1mole BaCl2/ 208.3G BaCl2)=.0410mole BaCl2\n.0410mole BaCl2*(2moles KCl/1moleBaCl2)=.0820 mole KCl2\n.0820mole KCl2*(110.1gKCl2/1mole KCl2)=9.03gKCl2\n3)i don't know this one\n4) 2NaOH + H2 is reduced\n5) i don't know this one\n6) 5gNa*(1moleNa/23gNa)=.217mole Na\n.217mole Na*(6.02x10^23/1mole Na)=1.31x10^23 atoms Na
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Gold\n\nCheck out the cool interactive periodic table in the links below.
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Take radium and subtract two from its atomic number. Then find the element with that result as its atomic number. I'm too lazy to see what that is right now.
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1. Platinum-pt\n2. Boron-b+3\n3. Galium-ga+3\n4. Nitrogen-n-3\n5. Carbon-c\n6. Silicate-Si+4\n7. Fluorate-f-1\n8. Iodate-I-1\n9. Astatate\n10. and the ionic formulae for all of the transition elements that you kn\nget more here below
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ask in chemistry category
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If you have the letter names, use the Periodic Table of Elements.  If not, use PH paper, and that might help.  Go by color, soluability, and texture.
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Here is the answer.. Just remember periodi table...\nElements on left most side are electro positive and elements on right most are electro negative. (The last row is nobel gases..so leave it)\nNow Cl- belongs to right most side... its more electro-ve\nRb, Ca are on left side.... they are electro positive(They will give  electron with out much force)\nSi, S are in middle-- their properties are in between...\n\nThats it!
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CO2 and H2SO4\n\n"metal" belongs to group IA, IIA, and B\n\nNa is IA\nK is IA
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Doing the Lewis dot structure for lead is a little hard here since I can not necessarily draw the structure on the screen, but here is how to do it.\n\nFirst, take out your periodic table and see where Pb, lead, is located.  Then, determine how many s and p electrons you have, do not count the center electrons is basically what you do, meaning it has 4 outer electrons.  Thus, draw 4 dots around Pb, and you have a Lewis dot structure.
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go to www.google.com them write periodic table and than go to images and you'll see
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All you really need to know is what column the element is in.  The first column from the left is +1 and the second column from the left is +2.  Here you have to remember to skip over to column 13, which is +3.  14 is + or -4, 15 is -3, 16 is -2, 17 is -1, and 18 is 0.  Columns 3-12 are metals, and there are usually several small numbers above the symbol on a good table.  They will tell you the charge of the element.  If there are more than one for the metal, the bold one is the most common.\n\nHope this helps and isn't too confusing!
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Zinc is by far the best element. I also like plutonium.  It's just fun to say. "Plutonium."
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I HAVE A CHEMISTRY EXAM tomorrow. Actually a small test.lol\nwant answers go to the site below!
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Column 1 on the left is alkali metals (not counting hydrogen).\n\nColumn 2 is alkaline earth metals.\n\nColumns 3-12 are transition metals\n\nColumn 13 is the Boron Group\n\nColumn 14 is the Carbon Group\n\nColumn 15 is the pnicogens\n\nColumn 16 is the chalcogens\n\nColumn 17 is the halogens\n\nColumn 18 is the noble gases\n\nThe ones down on the bottom are the rare earth metals... top row is the lanthanide series, bottom row the actinide series