HELP anybody its due today .

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

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