Typical Flu Duration. For most people, the flu lasts anywhere from about three days to two weeks. If it lasts much longer than two weeks, you may have developed a secondary infection or one of these common flu complications.
More silver facts. 1  While aluminum is the most common metal found in the Earth's crust, the most common metal found on Earth is iron, mostly because it makes up such a large part of the Earth's core.2  More iron facts. 3  Copper is a good conductor of electricity and is often used for making wires.ore silver facts. 1  While aluminum is the most common metal found in the Earth's crust, the most common metal found on Earth is iron, mostly because it makes up such a large part of the Earth's core.
Many elements are classified as metals. Recall that. metals can conduct heat and electricity. Most metals can. be stretched and shaped into flat sheets or pulled into. wires. Families of metals include the alkali metals, the. alkaline-earth metals, and the transition metals. THE ALKALI METALS. The elements in Group 1 form a family called the. alkali metals. Because their atoms have only one. valence electron, the alkali metals are very reactive. The. valence electron can be easily removed to form a cation. such as Na or K. Alkali metals also have similar. physical properties, such as melting point, boiling point, and density.