Atom: Difference between revisions
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* Isotopes: Atoms of the same element with different numbers of neutrons, leading to variations in atomic mass. | * Isotopes: Atoms of the same element with different numbers of neutrons, leading to variations in atomic mass. | ||
= Properties of Atoms= | ==Properties of Atoms== | ||
Atoms exhibit several fundamental properties: | Atoms exhibit several fundamental properties: | ||
* Size: Typically in the range of picometers (1 pm = 10⁻¹² m). | * Size: Typically in the range of picometers (1 pm = 10⁻¹² m). | ||
* Charge: Atoms are electrically neutral unless they lose or gain electrons to form ions. | * Charge: Atoms are electrically neutral unless they lose or gain electrons to form ions. | ||
* Reactivity: Dependent on the arrangement of electrons in the outermost shell. | * Reactivity: Dependent on the arrangement of electrons in the outermost shell. | ||
= Atomic Theories= | = Atomic Theories= | ||
Several theories have been proposed to explain atomic structure: | Several theories have been proposed to explain atomic structure: | ||