The molecular formula specifies the number of atoms of each element in one molecule. For iso-octane this is C8H18. This means that there are 8 atoms of carbon and 18 atoms of hydrogen in one molecule of C8H18. This also means that in one mole of iso-octane, there are 8 moles of carbon and 18 moles of hydrogen.
As shown in Table 2, the average iodine adsorption number per gram of the carbon black of the set of E2-1ËE2-5 is 124.8 mg as compared to 126 mg per gram of the carbon black sample determined by the titration method according to the standard of ASTM-D1510.
Atomic Number Atomic Mass Electron Configuration Number of Neutrons Melting Point Boiling Point Date of Discovery Crystal Structure. Element Groups: Alkali Metals Alkaline Earth Metals Transition Metals Other Metals Metalloids Non-Metals Halogens Noble Gases Rare Earth Elements Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page. Basic Information Name: Iodine Symbol: I Atomic Number: 53 Atomic Mass: 126.90447 amu Melting Point: 113.5 Â°C (386.65 K, 236.3 Â°F) Boiling Point: 184.0 Â°C (457.15 K, 363.2 Â°F) Number of Protons/Electrons: 53 Number of Neutrons: 74 Classification: Halogen Crystal Structure: Orthorhombic Density @ 293 K: 4.93 g/cm 3 Color: blackish Atomic Structure