"Atom X is in Group IIA and atom Y is in Group VIIA. A compound formed between these two elements would have the formula:
A. X2Y, B. XY2, C. X2Y7, D. X7Y2"
My answer:
An alkaline earth metal X leaves Chicago at 3:15 PM. It has ns^2 as its valence set. At 4:30 PM a halogen leaves Skokie, IL with her sister for Chicago. They both have valences of ns^2, np^5, and maybe nd^10. They're leaving the small town to find electrons that would make them feel complete, noble even. Traffic along I-90 is terrible and they exit at Avondale and end up at a lunch counter across from Mr. X, who has two electrons buzzing about his head and is a member of the Fundamentalist church of Latter-Day Saints. He draws the two ladies close, marrying them. Answer B, XY2. Sorry.
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