Examlex
Fritz Lang's 1926 film Metropolis explored and promoted the glory and the power of the modern city.
Neutrons
Subatomic particles found in the nucleus of an atom, with no electric charge and a mass slightly greater than that of protons.
Lewis Structure
A diagram that represents the valence electrons of atoms within a molecule, illustrating the bonding between atoms and the existence of lone pairs of electrons.
Acetic Acid
A weak, organic acid that gives vinegar its characteristic smell and sour taste; used as a chemical reagent.
Lone Pairs
Electron pairs in the outer shell of an atom that are not involved in chemical bonding.
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