If a given forward reaction is exothermic and the reactants and products in a flask initially are at equilibrium, what will happen when the temperature is raised?

A. The system will shift to the right (in the direction of the forward reaction).

B. The system will shift to the left (in the direction of the reverse reaction).

C. The system will not shift.

D. The rates of both the forward and reverse reactions immediately decrease.

B. The system would shift  to the left ( in the direction of the reverse reaction).

Explanation:

Since the reaction system is exothermic (meaning it releases heat during the process), increasing the temperature will shift the equilibrium to the left, according to Le Charteliers's Principle so as to annul the effect of the contraint (heat) added to the system.

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explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

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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.