The radius of a calcium ion is smaller than the radius of calcium atom beacuse the calcium ion contain the same nuclear charged and

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Using the periodic table, complete the table to describe each atom. type in your answers

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature