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From left to right in the periodic table, these categories include the highly reactive alkali metals; the less-reactive alkaline earth metals, lanthanides, and radioactive actinides; the archetypal transition metals; and the physically and chemically weak post-transition metals.
16 kwi 2019 · Chemical Properties of Nonmetals. Non-metals have a tendency to gain or share electrons with other atoms. They are electronegative in character. Nonmetals, when reacting with metals, tend to gain electrons (typically attaining noble gas electron configuration) and become anions: \[\ce{3Br2(l) + 2Al(s) \rightarrow 2AlBr3(s)} \nonumber \]
Elements with a high electronegativity are generally nonmetals and electrical insulators and tend to behave as oxidants in chemical reactions. Conversely, elements with a low electronegativity are generally metals and good electrical conductors and tend to behave as reductants in chemical reactions.
Chemical Properties of Nonmetals. Non-metals have a tendency to gain or share electrons with other atoms. They are electronegative in character. Nonmetals, when reacting with metals, tend to gain electrons (typically attaining noble gas electron configuration) and become anions: Nonmetal + Metal -> Salt \[3Br_{2(l)} + 2Al_{(s)} \rightarrow ...
Metal Properties: Having a luster (shine) from reflecting light. Some metals will form a patina and the luster is lost. Being malleable in their solid state. Gold is the most malleable of all the metals. Being ductile – which means it can be drawn into a wire. Silver is one of the most ductile metals. Able to conduct heat and electricity.
13 sie 2020 · Comparison of the chemical and physical properties of metals and nonmetals. Metals. About 75% of elements on the periodic table are metals.Because so many elements are metals, they are subdivided into smaller groups, including the alkali metals, alkaline earth metals, transition metals, post-transition or basic metals, lanthanides, and actinides.Most metals are easy to recognize by their shiny ...
9 sie 2021 · Most elements of the periodic table are metals, some are nonmetals, and a few have properties of both metals and nonmetals, so they are called metalloids.
