![]() ![]() It is often calculated by observing the gain and loss of electrons in an atom. Metal oxides, such as and, give rise to high pH values, and non-metal oxides, such as and, give rise to low pH values.Īn oxidation state is defined as the degree of oxidation a compound can achieve. Metal oxides are basic compounds, whereas non-metal oxides are acidic compounds. Transition metals are classified as metals therefore, the oxides they form are called metal oxides. When an element loses electrons it is considered to be oxidized and can act as a reducing agent therefore, sodium is not an oxidizing agent. Since they only have a few valence electrons, metals prefer to lose their valence electrons to complete an octet. Recall that metals usually have one, two, or three valence electrons. Metals are good reducing agents, not oxidizing agents. They are also ductile, which means that a metal can be stretched to create thin wires. Metals are good electrical conductors and solid at room temperature. Silicon is in group 14 and is considered a non-metal therefore, the element has to be sodium. ![]() The answer choices state that it could be either sodium or silicon. The groups that are classified as metals include the alkali metals (group 1), alkaline earth metals (group 2), the aluminum family (group 3), and the transition metals (D block). Recall that metals are usually found on the left side of the periodic table. These are characteristics of a metal therefore, the element is likely a metal. The question states that the element is a solid at room temperature and conducts electricity. ![]()
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