(a) Construct a Lewis structure for hydrogen peroxide, H₂O₂, in which each atom achieves an octet of electrons.

검증된 단계별 안내

Identify the total number of valence electrons in the molecule. Hydrogen (H) has 1 valence electron and Oxygen (O) has 6 valence electrons. Therefore, for H2O2, calculate the total valence electrons as: 2(1) + 2(6) = 14 valence electrons.

Arrange the atoms with the least electronegative atom in the center. In H2O2, the structure is linear with the two oxygen atoms in the center: H-O-O-H.

Connect the atoms with single bonds initially. Each single bond represents 2 electrons. So, connect H-O, O-O, and O-H with single bonds, using 8 electrons in total (4 bonds x 2 electrons each).

Distribute the remaining valence electrons to satisfy the octet rule for each atom. Start by placing the remaining electrons around the oxygen atoms to complete their octets. Each oxygen should have 8 electrons around it, including those in bonds.

Check that all atoms have achieved a full valence shell. Hydrogen atoms should have 2 electrons (1 bond), and each oxygen should have 8 electrons (including shared electrons in bonds). Adjust if necessary to ensure all atoms satisfy their respective electron requirements.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

도움이 되었나요?

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 use dots to represent valence electrons and lines to represent bonds between atoms. Constructing a Lewis structure involves determining the total number of valence electrons, arranging atoms, and ensuring that each atom achieves a stable electron configuration, typically an octet for main group elements.

Octet Rule

The octet rule is a chemical principle that states that atoms tend to bond in such a way that they each have eight electrons in their valence shell, achieving a stable electronic configuration similar to that of noble gases. This rule is particularly applicable to main group elements and guides the formation of covalent bonds, where atoms share electrons to fulfill this requirement.

Valence Electrons

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms. The number of valence electrons determines an element's chemical properties and its ability to bond with other elements. In the case of hydrogen peroxide (H2O2), understanding the valence electrons of hydrogen and oxygen is crucial for constructing its Lewis structure and ensuring that all atoms achieve an octet where applicable.

(a) Construct a Lewis structure for hydrogen peroxide, H2O2, in which each atom achieves an octet of electrons.