Valence electrons = Electrons in … Only bromine exists as a liquid at room temperature. Metals In the periodic table, you can see a stair-stepped line starting at Boron (B), … Using the periodic table, you can classify the elements in many ways. Other chemical elements commonly classified as metalloids include silicon, germanium, arsenic, antimony and tellurium. The lower the electronegativity, the easier the electron is lost and the stronger or more metallic is the metal. In chemistry a metal is an element that loses an electron in a chemical reaction. Physical State: Most of the non-metals exist in two of the three states of matter at room temperature: gases (oxygen) and solids (carbon). The radius of the sodium atom is 1.86 x 10−8 cm. It loses an electron easily in chemical reactions so it is a strong metal. It is really just a nonmetal. It is so highly reactive that pure sodium cannot exist on its own in nature. One useful way is by metals, nonmetals, and metalloids. Sodium is a metal, and chlorine is a nonmetal. The free metal does not occur in … It behaves as a nonmetal in reaction with sodium and a metal when combined with fluorine. As a metalloid, boron's physical and chemical properties are between those of metals and nonmetals. Salt on its own is neither; it is an ionic compound. Electronic configuration of sodium: 2, 8, 1. Number of electrons in outermost orbit = 1. Carbon is a nonmetal but can sometimes be classified as a metalloid. It is a metal. Determine the mass and volume of the unit cell for sodium. It is a soft, silvery-white, highly reactive metal.Sodium is an alkali metal, being in group 1 of the periodic table. Sodium has a very low electronegativity. Its only stable isotope is 23 Na. Atomic number of sodium = 11. Nonetheless, there are many sodium compounds that are common in nature, such as sodium chloride, also known as table salt. Sodium is a metal that forms a body-centered cubic unit cell. Pure sodium is a soft, silvery metal that is incredibly reactive with both air and water. 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. Sodium is a chemical element with the symbol Na (from Latin "natrium") and atomic number 11. In ambient conditions bulk gold is always classified as a metal. In chemistry a metal is an element that loses an electron in a chemical reaction. Formation of sodium chloride (NaCl): In sodium chloride; sodium is a metal (alkali metal) and chlorine is non-metal. Non-Malleable and Ductile: Non-metals are very brittle, and cannot be rolled into wires or pounded into sheets. The periodic table is organized in families and periods. Sodium has a very low electronegativity. 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