In ambient conditions bulk gold is always classified as a metal. It is really just a nonmetal. It is so highly reactive that pure sodium cannot exist on its own in nature. Sodium is a metal that forms a body-centered cubic unit cell. It loses an electron easily in chemical reactions so it is a strong metal. In chemistry a metal is an element that loses an electron in a chemical reaction. Valence electrons = Electrons in … It is a soft, silvery-white, highly reactive metal.Sodium is an alkali metal, being in group 1 of the periodic table. Only bromine exists as a liquid at room temperature. Carbon is a nonmetal but can sometimes be classified as a metalloid. It loses an electron easily in chemical reactions so it is a strong metal. Nonetheless, there are many sodium compounds that are common in nature, such as sodium chloride, also known as table salt. Physical State: Most of the non-metals exist in two of the three states of matter at room temperature: gases (oxygen) and solids (carbon). Sulphur is a non-metal: Magnesium is a metal (i) Poor conductor of heat and electricity (i) Good conductor of heat and electricity (ii) Neither malleable nor ductile (ii) Malleable nor ductile (iii) S + O 2 →SO 2 SO 2 + H 2 O → H 2 SO 3 (Sulphurous acid) Sulphur dioxide is acidic oxide. Electronic configuration of sodium: 2, 8, 1. Formation of sodium chloride (NaCl): In sodium chloride; sodium is a metal (alkali metal) and chlorine is non-metal. The free metal does not occur in … Its only stable isotope is 23 Na. Physical Properties of Nonmetals. The radius of the sodium atom is 1.86 x 10−8 cm. One useful way is by metals, nonmetals, and metalloids. Salt on its own is neither; it is an ionic compound. Number of electrons in outermost orbit = 1. An average sodium … Metals In the periodic table, you can see a stair-stepped line starting at Boron (B), … As a metalloid, boron's physical and chemical properties are between those of metals and nonmetals. Sodium has a very low electronegativity. Sodium is a metal, having atomic number 11. silicon is a semi-metal as it has properties of both a metal and a non-metal. Sodium is a chemical element with the symbol Na (from Latin "natrium") and atomic number 11. Atomic number of sodium = 11. The periodic table is organized in families and periods. The lower the electronegativity, the easier the electron is lost and the stronger or more metallic is the metal. Sodium has a very low electronegativity. Other chemical elements commonly classified as metalloids include silicon, germanium, arsenic, antimony and tellurium. Sodium is a metal, and chlorine is a nonmetal. It is a metal. It behaves as a nonmetal in reaction with sodium and a metal when combined with fluorine. 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