Which of the following has a molecular structure best described as involving an "incomplete octet"? A)OF₂ B)BF₃ C)CF₄ D)NF₃ E)F₂

Question

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In an "incomplete octet," the central atom has less than eight electrons in its valence shell. This is only possible for elements in period three or lower of the periodic table. Among the choices given, only option B has a central atom, boron (B), that has an incomplete octet. Boron is in period 2 of the periodic table and can accommodate only six electrons in its valence shell.

Which of the Following Has a Molecular Structure Best Described