12. Calculate the average atomic mass for element "Q" in the table below. Isotope Relative Abundance 83.3% Atomic Mass 15.00 14.00 Q-14 14.80 B 14 84 C 14 83 D 14.85

Ionic solids such as sodium chloride are easily shattered, but metallic solids such as copper can be easily bent and shaped. this difference occurs because a. ionic solids have low melting points b. covalent bonding between sodium and chlorine keeps the solid rigid c. mobile electrons in the copper can shift without disrupting the solid