Assertion: iodide's iodine | /r/HasProperty | the heaviest element
Facets:
value: at atomic number
type: OTHER
Source sentences:
text: Iodine is an essential element for life and, at atomic number Z = 53, is the heaviest element commonly needed by living organisms.
text: Iodine is a micronutrient and dietary mineral that is naturally present in the food supply in some regions, especially near sea coasts, but is generally quite rare in the Earth's crust, since iodine is a so-called heavy element, and abundance of chemical elements generally declines with greater atomic mass.