according to the MERCK index, what is the largest molecule known to man?
79740
Would have to be a DNA molecule which can have 10^8 bases or 10^10 separate atoms.
145847
# Large molecules in biological systems namely proteins, nucleic acids, and polysaccharides.\nwww.whatislife.com/glossary.htm\n\n# large single chemical entities such as pieces of DNA or RNA.\nwww.biologylessons.sdsu.edu/classes/lab3/glossary.html\n\n# A macromolecule is a molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition of units derived, actually or conceptually, from molecules of low relative molecular mass.\nen.wikipedia.org/wiki/Macromolecule\n\nA macromolecule is a molecule with a large molecular mass, but generally the use of the term is restricted to polymers and molecules which structurally include polymers. [1]\n\nMany examples come from biology and in particular biochemistry. These include proteins, starches, lipids and nucleic acids (such as DNA), which are sometimes called "biomacromolecules" or biopolymers. Synthetic examples include plastics. The integral domains of crystals and metals, while composed of very large numbers of atoms joined by molecule-like bonds, are rarely referred to as "macromolecules."\n\nThe term macromolecule is also sometimes used to refer to aggregates of two or more macromolecules held together by intermolecular forces rather than by chemical "bonds". This usage is common in particular when the individual macromolecules involved aggregate or "assemble" spontaneously and rarely exist in isolation. Such an aggregate is more properly called a macromolecular complex. In such a context, individual macromolecules are often referred to as subunits (see e.g. protein subunit).\n\nSubstances that are composed of macromolecules often have unusual physical properties. The properties of liquid crystals and such elastomers as rubber are examples. Although too small to see, individual pieces of DNA in solution can be broken in two simply by suctioning the solution through an ordinary straw. This is not true of smaller molecules. The 1964 edition of Linus Pauling's College Chemistry asserted that DNA in nature is never longer than about 5000 base pairs. This is because biochemists were inadvertently and with perfect consistency breaking their samples into pieces. In fact, the DNA of chromosomes can be tens of millions of base pairs long.\n\nAnother common macromolecular property that does not characterize smaller molecules is the need for assistance in dissolving into solution. Many require salts or particular ions to dissolve in water. Proteins will denature if the solute concentration of their solution is too high or too low.
821309
Smallest is Hydrogen, largest would be, although it hasn't been created yet, element 121 also called Unbiunium according to IUPAC nomenclature. I say that because that is the largest element that would be able to be produced using current particle accelerators and colliders.
1054557
Biggest Thing "ON" Earth?\n\nSUN...  Yes... It is Sun
495461
Atomic radius (or size) increases as you go down and to the left on the periodic table.  Therefore, out of these, the largest would be K.
537610
there are an unlimited number of chemicals possible...\nthere is not currently a single list of every chemical known to man.
160979
molecules. i would say that the best and most simple answer to this question is on one the the most basic levels in life. Life is possible because of these reactions that take place everyday such as the main source of life, water. It is brought together by oxygen and hydrogen.
90889
Caffeine!\nhttp://www.geocities.com/anteriorlobe/images_molecules/Caffeine_0640x480.jpg
1104261
That'd be Astatine, there's about 25g of naturally occurring Astatine on the planet only.
253918
Molecules are made of atoms
162878
From Merck: at 0oC, 1.7gm/L; at 95oC, 68 gm/L (as close as I could find).
220701
We don't yet have the technology to answer this question.\n\nEDIT: To dogoutburner: That's the largest in our galaxy. We have no idea the largest in the universe.
720666
The heaviest man made element is 112 protons but is unnamed.  #111 is name Roentgenium.
13881
It IS the liver.  Your skin is an organ but it is on the outside of your body.  The question specifically asks for the largest organ IN your body.
546900
The DNA Double Helix is one of the greatest scientific discoveries of all time. First described by James Watson and Francis Crick in 1953, DNA is the famous molecule of genetics that establishes each organism's physical characteristics. It wasn't until mid-2001, that the Human Genome Project and Celera Genomics jointly presented the true nature and complexity of the digital code inherent in DNA. We now understand that there are approximately 35,000 genes in each human DNA molecule, comprised of chemical bases arranged in approximately 3 billion precise sequences. Even the DNA molecule for the single-celled bacterium, E. coli, contains enough information to fill all the books in any of the world's largest libraries.
880140
Sulphur would be the biggest atom because it has the most protons, electrons, & neutrons.\n\nThose with a tendancy to gain electrons are further to the right of the periodic table. This inlcudes O, S and P (to a lesser extent).\nAl and B are further to the left on the periodic table and would have a tencancy to lose electrons.
879801
Pentane\n\nIt depends on which compound has the strongest intermolecular forces. In the case of hydrocarbons the intermolecular forces that are present are dispersion forces.\nIn such cases:\n"The more branched a molecule is, the more "spherical" it is, and the smaller surface area it will have - since dispersion forces increase with surface area, the more branched molecules will have a lower boiling point. You may notice that the trend in the melting points is rather different - this is because the longer a branch is, the more potential it has to flop around and disrupt the regular crystalline lattice of frozen pentane, giving a liquid state."