Input interpretation
water-18 O
Chemical names and formulas
formula | H_2^18O Hill formula | H_2(18O) name | water-18 O IUPAC name | oxidane alternate names | oxidane mass fractions | O (oxygen) 0.899% | H (hydrogen) 0.101%
Lewis structure
Draw the Lewis structure of water-18 O. Start by drawing the overall structure of the molecule: Count the total valence electrons of the hydrogen (n_H, val = 1) and oxygen (n_O, val = 6) atoms: 2 n_H, val + n_O, val = 8 Calculate the number of electrons needed to completely fill the valence shells for hydrogen (n_H, full = 2) and oxygen (n_O, full = 8): 2 n_H, full + n_O, full = 12 Subtracting these two numbers shows that 12 - 8 = 4 bonding electrons are needed. Each bond has two electrons, so the above diagram has all the necessary bonds. There are 2 bonds and hence 4 bonding electrons in the diagram. Lastly, fill in the remaining unbonded electrons on each atom. In total, there remain 8 - 4 = 4 electrons left to draw: Answer: | |
Basic properties
molar mass | 20.015 g/mol phase | liquid (at STP) melting point | 0 °C boiling point | 100 °C density | 1.11 g/cm^3
Units
Liquid properties (at STP)
density | 1.11 g/cm^3
Units
Non-standard atom properties
O-18 | 1
Chemical identifiers
CAS number | 14314-42-2 PubChem CID number | 105142 PubChem SID number | 24859818 SMILES identifier | O InChI identifier | InChI=1/H2O/h1H2/i1+2 MDL number | MFCD00064503