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2 days ago · Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity.
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Jul 17, 2024 · There are seven diatomic elements: hydrogen, nitrogen, oxygen, fluorine, chlorine, iodine, and bromine. These elements can exist in pure form in other arrangements. For example, oxygen can exist as the triatomic molecule, ozone. This is a list of the seven diatomic elements: Hydrogen (H 2)
- Anne Marie Helmenstine, Ph.D.
Jul 13, 2024 · The periodic table is a table that puts all known chemical elements in a specific order. Elements that have similar characteristics are often put near each other. In the table, the elements are placed in the order of their atomic numbers starting with the lowest number of one, hydrogen.
Jun 28, 2024 · noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og). The noble gases are colourless, odourless, tasteless, nonflammable gases.
Jul 9, 2024 · The electric field mediates the electric force between a source charge and a test charge. The electric field, like the electric force, obeys the superposition principle. The field is a vector; by definition, it points away from positive charges and toward negative charges.
Jul 8, 2024 · You can use the PERIODIC TABLE to predict whether an atom will form an anion or a cation. Atoms of many main-group metals lose enough electrons to leave them with the same number of electrons as an atom of the preceding noble gas.
Jun 27, 2024 · It is a general rule that for elements on the left in the periodic table, which have one, two, or three electrons in their valence shells, sufficient energy is attainable in chemical reactions for their removal, but not enough energy is available for removing any electrons from inner shells.
