The formulas for the fluorides of the third-period elements are NaF, MgF2, AlF3, SiF4. PF5, SF6, and ClF3. Classify each of these compounds as covalent or ionic.
1 Chapter 2 Elements, Compounds, and The Periodic Table Objectives: Periodic Table Chemical Equations Writing and naming chemical compounds Periodic Table: The rows in the table are called periods. The columns are called groups or families. The table is arranged in order of increasing atomic number (# e's, or # p's). The elements in a group have the same chemical properties. For example, Li, Na, and K react with water and release hydrogen gas. Ten elements in the center (Groups IIIB, IIB) are referred to as transition elements. Elements in Group IA are called alkali metals. Elements in Group IIA are called alkali earth metals. Elements in Group VIIA are called halogen