Answer :
Final answer:
Gallium (Ga) is a metal based on its characteristics and position in group 13 of the periodic table. Indium (In), which is in the same group as gallium, is also classified as a metal and is known for its use in electronics.
Explanation:
The element Gallium (Ga) with an atomic number of 31 is classified as a metal based on its position on the periodic table. Gallium is found in group 13, which is known for elements that have both metallic and nonmetallic properties. However, gallium is solid at room temperature, has a shiny surface, and can conduct electricity well, which are characteristic features of metals.
Similarly, indium (In), the element in question in the exercises, is also located in group 13 of the periodic table and is therefore considered a metal. It shares similar properties with gallium, being soft and malleable, and having a bright luster. Indium is widely used in various alloys and as a transparent conductive coating in touch screens and liquid crystal displays.
