객관식
Which of the following best describes the Lewis structure of the (diazomethanium) ion?
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1. A Review of General Chemistry
Lewis Structure
객관식
Which of the following best describes the correct Lewis structure for (dibromomethane)?
A
A central carbon atom single-bonded to two hydrogen atoms and one bromine atom, with the second bromine atom bonded to one of the hydrogens.
B
A central carbon atom single-bonded to two hydrogen atoms and two bromine atoms, with all atoms having complete octets except hydrogen, and no lone pairs on carbon.
C
A central carbon atom single-bonded to four bromine atoms, with no hydrogen atoms present.
D
A central carbon atom double-bonded to one bromine atom, single-bonded to two hydrogen atoms, and single-bonded to the other bromine atom.
검증된 단계별 안내1
Identify the molecular formula of dibromomethane, which is C\_2H\_2Br\_2, and recognize that it consists of two carbon atoms, two hydrogen atoms, and two bromine atoms.
Recall that in organic molecules, carbon typically forms four bonds to satisfy the octet rule, hydrogen forms one bond, and bromine usually forms one bond and has three lone pairs to complete its octet.
Determine the connectivity: each carbon atom will be bonded to hydrogens and bromines such that each carbon has four single bonds total, with no double bonds or unusual bonding patterns unless specified.
Draw the Lewis structure with each carbon atom single-bonded to one hydrogen and one bromine, and the two carbons bonded to each other, ensuring all atoms (except hydrogen) have complete octets and carbon has no lone pairs.
Verify that the structure has no atoms violating the octet rule, no extra bonds (like double bonds to bromine), and that bromine atoms are bonded only to carbon atoms, not to hydrogens or other bromines.
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