Recall that a precipitate formed in the Fe3 (aq) solutions when either NaOH(aq) or NH3(aq) was added. Given this, explain why a precipitate formed when NaOH(aq) was added to the Ca2 (aq), but no reaction occurred when the NH3(aq) was added to the Ca2 (aq) solution. Hint: Think about relative solubilities and the relative concentrations of hydroxide ions in NaOH(aq) versus NH3(aq).

kuchisake

kuchisake-onna (口裂け女, "slit mouth woman ") is a malevolent figure appearing in japanese ghost stories, possibly dating back to the edo period. she takes the form of a masked woman who approaches people and asks them if they believe she is pretty.

explanation:

where are the choice options?

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.