Examlex
Change 109 to base four.
Structural Isomers
Molecules with the same molecular formula but different arrangements of atoms, resulting in different properties.
Valence Electrons
The electrons in the outermost shell of an atom, which determine the atom's chemical properties and its ability to form bonds.
Hydrogen Bonds
Weak bonds between a hydrogen atom in one molecule and an electronegative atom (often oxygen or nitrogen) in another, important in the structure of water and DNA.
Carbon Atom
The fundamental chemical element with symbol C, essential to all known life forms and the basis of organic chemistry.
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