Answer :
Final answer:
Mercury (Hg) is the only metal that is liquid at room temperature while bromine (Br2) is the nonmetal that is liquid under those conditions. Other metals such as francium, cesium, gallium, and rubidium melt at slightly above room temperature. The periodic table positions metals on the left and bottom, nonmetals on the upper right, and metalloids in a diagonal band between them.
Explanation:
The student has asked about which elements are liquids at room temperature and the categorization of elements as metals, nonmetals, or metalloids on the periodic table. Liquids at room temperature include mercury (Hg), which is a metal, and bromine (Br2), a nonmetal existing as diatomic molecules. Most metals are solid at room temperature, except for mercury. Metals are commonly found towards the bottom left of the periodic table and have characteristics such as luster, ductility, and good electrical conductivity. Nonmetals are located on the upper right and tend to be brittle and poor electrical conductors. Metalloids exhibit properties intermediate between those of metals and nonmetals and are found along the diagonal band separating metals and nonmetals on the periodic table.
At room temperature, mercury (a metal) and bromine (a nonmetal) are the only elements that exist as liquids. Cesium, gallium, francium, and rubidium are solid metals at slightly warmer temperatures.
Room temperature refers to the range of temperatures that are generally comfortable for humans, typically around 20-25°C (68-77°F). On the periodic table, two elements exist as liquids at room temperature. These elements are mercury (Hg) which is a metal, and bromine (Br₂) which is a nonmetal and exists as diatomic molecules. Other elements like francium, cesium, gallium, and rubidium are solid metals at room temperature but can become liquid when the temperature is slightly higher.
