False. elements in the same period have the same number of shells while elements in the same group have the same number of valence electrons.
Among the choices given, the correct answer is the first option. Substance X most likely is a crystal, and substance Y most likely is a liquid. Substance X having a fixed volume describes a crystal because crystals occupy a certain volume. Substance Y is a liquid because liquids can still be compressed further in order to attain a more packed <span>structure.</span>
Are u sure this is the right option? Well, antimony can be decomposed. Including octane.
<span>c. q = 0.75 g x 0.897 j/g•°c x 22°c</span>
Your question isn’t typed right :(
