In the reaction: CH3COOH(aq) + NH2– (aq) CH3COO– (aq) + NH3(aq), the conjugate acid-base pairs are: ​A)​pair 1: CH3COOH and CH3COO– ; pair 2: NH2– and NH3
​B)​pair 1: CH3COOH and NH3; pair 2: NH2– and CH3COO–
​C)​pair 1: CH3COOH and NH2– ; pair 2: NH3 and CH3OO–
​D)​pair 1: CH3COOH and CH3COO– ; pair 2: NH4+ and NH3
​E)​pair 1: CH3COOH and CH3COO– ; pair 2: NH2– and NH3+

c. is the answer

by love gaming

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.