Apiece of platinum metal with a density of 21.5 g/cm3 has a volume of 8.89 cm3. what is its mass?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers

Why do oxygen have a strong attractive force for electrons