Hypothesis: Explain the relationship between forward and reverse reactions at equilibrium and projectile changing the amount of a reactant or product (creating stress) will affect that relationship.
For example (select one from each underlined section)
1: If the amount of (Reactant or Product) increases, the rate of the (Forward or Reverse) reaction will (Increase or Decrease) to reach equilibrium.
2: If the amount of (Reactant or Product) decreases, the rate of the (Forward or Reverse) reaction will (Increase or Decrease) to reach a new equilibrium.

i belive it is water

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.