1). The elements in yellow are referred to as______
2). The periodic table is arranged by____
3). What are 4 characteristics of metals?
4). Identify the group or period that matches each description.
a. Elements with 6 energy levels.
b. Elements with 2 balance electrons.
5). Energy levels hold a specific number of electrons. There are up to___ electrons in the first level, up to__ in the second level and up to__ in the third level.
