Question

During a reaction, a halogen chemically combines with a Group 1 element to form a compound. how does this reaction occur, based on the atomic structure of each element?
A) a halogen atom loses an electron to an atom of Group 1 element
B) a halogen atom gains an election from an atom of a Group 1 element
C) a halogen atom loses two electrons to an atom of a group 1 element
D) a halogen atom shares an electron with an atom of a Group 1 element

Answer 1

The answer for this question would be B. Both elements, one being a Group 1 and the other being a Group 17, want to attain the octet of electrons in the outermost shell for chemical stability. The Group 1 element has one too many electrons, and the 17 is lacking one. To increase the stability of the system, the Group 1 can donate the extra electron to the Group 17 so that both can emulate a stable octet. In doing so, two ions are produced (elements that have a net charge that isn’t 0), and thus we have an “ionic bond.”

Hope this helps!

Answer 2

The right answer is B