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