We are asked to choose which among the given elements tend to form anions in binary ionic compounds.
Recall that a binary ionic compound involves the bond between a cation (positive ion) and an anion (negative ion).
The cation is a positive metal and the anion is a negative nonmetal. Let us look at each of the given choices and identify each type. Remember that we are looking for negative nonmetals.
In which set do all elements tend to form anions in binary ionic compounds?
a. Li, Na, K
b. N, O, I
c. K, Fe, Br
d. C, S, Pb
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