Questions

CHEM 110 Section 3 (PM) SP25 Pre-Lecture 16 Quiz C07-4-6

Multiple choice

Which atoms are likely to form stable molecules that have an incomplete octet on the central atom? [Select all that apply.]

Options

A.B

B.C

C.F

D.H

E.Be

F.Si

G.P

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Step-by-Step Analysis

Question restatement: Which atoms are likely to form stable molecules that have an incomplete octet on the central atom? Select all that apply. Answer choices provided: B, C, F, H, Be, Si, P. Correct selections given: B, H, Be. Now analyze each option in turn: Option B (boron): Boron has 3 valence electrons and commonly forms compounds where it shares only three bonds, yielding about 6 electrons around boron rather than a full octet. This incomplete octet is well-documented in many stable boron compounds such as BF3 or BCl3, where boron achieves stability without completing an octet. Therefore, B is consistent with the pattern of incomplete octets on the central atom in stable molecules. Option C (carbon): In typical covalent carbon compounds, the central carbon usually achieves an octet by sharing four pairs of ele......Login to view full explanation

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