Hey can anyone please provide me with a picture of a nitrogen molecule? I need it bad!!?
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http://www.lloydminsterheavyoil.com/nitrogen.jpg\nhttp://www.tcm.phy.cam.ac.uk/castep/MD/img43.png
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A molecule is made up of atoms.
910706
so you plot the proton number on the y-axis, and the different melting points of the elements across the x- axis.. actually are sure it has to be a bar graph.. i think a line/scatter graph would be more accurate maybe?
351716
In NH3, there are 3 bond pairs and 1 lone pair; there is repulsion between the lone pair and bond pair and between 2 bond pairs. Hence all the 4 pairs arrange themselves as far apart as possible to minimize the repulsion between them, while still maintaining the stability of the molecule. Hence, NH3 has a trigonal pyramidal shape which achieves the above purpose.\nSimilarly in H2S, there are 2 bond pairs and 2 lone pairs. Here there is repulsion between bond pair and bond pair; lone pair and lone pair and lone pair and bond pair, so the pairs spread out. In this case, a 'bent-V-shape' or a 'non-linear' shape for H2S is suitable as it minimizes repulsion and maximizes stability.
851509
There are two possibilities. Follow this link for a picture of the first possibility. http://img175.imageshack.us/img175/8223/ncssh2.jpg\n\nBasically, all 3 of these elements follow the octet rule (they want 8 electrons in their outermost shell), and as you can see, they all have 8. Now, S is carrying the - sign because it's formal charge is -1. Formal charge is calculated by Formal Charge=# of electrons the element has (S brings in 6) - the # of electrons it "owns" within the bond. Sulfur "owns" 7 in this case (3 lone pairs and one in a shared covalent bond--thus (3*2)+1=7.\n\nTherefore Formal Charge of Sulfur (in this case): is -1 because\n\n6-7=-1\n\nI probably made it sound more confusing than it is. Sorry about that.\n\nBut other than that, you know that Carbon should be the central atom here because it's coming in with only 4 electrons in it's valence shell, so it's more needy than Nitrogen with it's 5 and Sulfur with it's 6. So you stick it in the middle and then pretty much trial and error. \n\nThe other possibility is here.\nhttp://img175.imageshack.us/img175/6659/ncs2wf4.jpg\n\nThis time Nitrogen is carrying the -1 formal charge, because it comes into the bond with 5 electrons in it's valence shell, but it "owns" 6 in this case (2 lone pairs and 2 electrons out of the 4 in the N=C double bond..(2*2)+2=6. So...Formal charge of -1 comes from \n\n-1=5-6\n\nEven though these two molecules look different, they are in fact the same. This is a concept called resonance. \n\nI hope this wasn't too confusing.
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Molecules are made of atoms
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If the molecule has O,N,F,or Cl then most likely it is polar.  Look at the periodic chart and remember that the elements in the upper right are the most electronegative, so they want electrons.  When these elements are in a compound with other atoms such as C and H they will pull electrons closer making a dipole moment.  \n\nThe only real trick is looking at the geometry of the molecule, if there is more than one electronegative atom pulling in opposite directions then the dipole is canceld.  Such as O=C=O which is liniar.\n\nLook at an electronegativity chart you will see what I mean
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http://i24.photobucket.com/albums/c16/ScurvyBC/img007.jpg\n\nI drew it for you and uploaded it.\nWe did this activity in AP Chem where we had to build the models and draw them, and the teacher graded it and this is right. Oh but I forgot to draw the brackets around it with the negative charge symbol, so dont forget that!
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ask your chem prof or tutor ..it's hard to explain over the internet!
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NaCl IS A MOLECULE CALLED TABLE SALT!\nNH3 is not a molecule because the nitrogen atom is not bonded to another atom/atoms using all of its valence electrons and is therefore not a molecule, it is an ion.
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Try this URL... it shows some diagrams.  Although it does not have the full set of configurations for d and f orbitals.
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It's not nitrogen... It's hydrogen. They called my car the "Hindenburg" after it burst into flames when I pumped in a few pounds too many way back when in Lakehurst, New Jersey... Oh, the humanity!
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Try it out in the lewis-dot diagram\n      ..        ..\nH-O-Ca-O-H\n      ..        ..
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click on these links\nhttp://www.spartechsoftware.com/reeko/\nhttp://scifun.chem.wisc.edu/HOMEEXPTS/HOMEEXPTS.html\nhttp://www.hunkinsexperiments.com/\nhttp://www.reachoutmichigan.org/funexperiments/agesubject/lessons/nitrogen.html\nhope u r satisfied
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From the nitrogen atom as far as my knowledge of biochemistry goes DNA and protiens are the two main molecules that are formed frm niotrogen atom in combination with carbon and hydrogen
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This is an subject area where vocabulary is vital for clear understanding, to a degree I am not capable of, however the stuff that you ask about are so small that the only way to attempt to prove their existence is through mathematical formulae based on what we suspect to be true. Our lack of understanding on this subject, which is still very voung, means the answers available are sketchy at best compared to our understanding of molecular structure or atomic structure.\nWhat is known so far can be found in places like the noetic sciences knowledge centre, or wikipedia.
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Here you are (nice circles and atoms and stuff):\n\nhttp://www.uwgb.edu/dutchs/PETROLGY/ScaleAtomsCsRn.HTM