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Ch.9 - Molecular Geometry and Bonding Theories
Brown - Chemistry: The Central Science 15th Edition
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 15th EditionCh.9 - Molecular Geometry and Bonding Theories문제 61c
9장, 문제 61c

Glycine, the simplest amino acid, has the following Lewis structure:
c. What is the total number of 𝜎 bonds in the entire molecule, and what is the total number of 𝜋 bonds?

검증된 단계별 안내
1
Identify the types of bonds present in the glycine molecule. Glycine typically contains carbon (C), hydrogen (H), nitrogen (N), and oxygen (O) atoms.
Recall that a \(\sigma\) bond (sigma bond) is a single covalent bond formed by the direct overlap of atomic orbitals, while a \(\pi\) bond (pi bond) is formed by the side-to-side overlap of p orbitals.
Count the \(\sigma\) bonds: Each single bond in the molecule is a \(\sigma\) bond. Double bonds consist of one \(\sigma\) bond and one \(\pi\) bond.
Count the \(\pi\) bonds: Look for any double bonds in the molecule, as each double bond contains one \(\pi\) bond.
Sum up the total number of \(\sigma\) bonds and \(\pi\) bonds separately to find the answer.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
2m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Lewis Structures

Lewis structures are diagrams that represent the bonding between atoms in a molecule and the lone pairs of electrons that may exist. They help visualize the arrangement of electrons and the types of bonds (single, double, or triple) present in the molecule. Understanding how to draw and interpret Lewis structures is essential for identifying the number of sigma (𝜎) and pi (𝜋) bonds.
추천 영상:
가이드 코스
04:28
Lewis Dot Structures: Ions

Sigma (𝜎) and Pi (𝜋) Bonds

Sigma (𝜎) bonds are the first bonds formed between two atoms, created by the head-on overlap of atomic orbitals. Pi (𝜋) bonds, on the other hand, are formed by the side-to-side overlap of p orbitals and are present in double and triple bonds. Recognizing the difference between these bond types is crucial for determining the total number of each in a molecule.
추천 영상:
가이드 코스
03:26
Lewis Dot Structures: Sigma & Pi Bonds

Counting Bonds in Molecules

To answer questions about the number of sigma and pi bonds in a molecule, one must systematically analyze the Lewis structure. Each single bond corresponds to one sigma bond, while double bonds consist of one sigma and one pi bond, and triple bonds contain one sigma and two pi bonds. This systematic counting allows for accurate determination of the total bond types present in the molecule.
추천 영상:
가이드 코스
03:10
Homonuclear Diatomic Molecules
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교과서 질문

Glycine, the simplest amino acid, has the following Lewis structure:

a. What are the approximate bond angles about each of the two carbon atoms, and what are the hybridizations of the orbitals on each of them?

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교과서 질문

Glycine, the simplest amino acid, has the following Lewis structure:

b. What are the hybridizations of the orbitals on the two oxygens and the nitrogen atom, and what are the approximate bond angles at the nitrogen?

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