Are all the atoms of ethylene bromide in the same plane?

Yes, 1. The geometric configuration and substitution law of common simple molecules.

1 Tetrahedral structure of methane: In the methane molecule, 1 carbon atom and any 2 hydrogen atoms can determine a plane, and the remaining 2 hydrogen atoms are located on both sides of the plane, that is, there are and only three atoms in the methane molecule (called the triangular rule). When a hydrogen atom in a methane molecule is replaced by another atom or cluster of atoms, the coplanarity of the substituted atom can be regarded as the original hydrogen atom position.

2 Planar structure of ethylene: All the atoms in the ethylene molecule are in the same plane with a bond angle of 120°. When a hydrogen atom in an ethylene molecule is replaced by other atoms or clusters, the atom that replaces the hydrogen atom must be in the plane of ethylene.

3. Planar structure of benzene: the benzene molecule is a planar regular hexagon, all atoms are in the same plane, the bond angle is 120°, and the carbon and hydrogen in the diagonal position are a total of 4 atoms in the same straight line. When one hydrogen atom in a benzene molecule is replaced by another atom or cluster of atoms, the atom that replaces the hydrogen atom must be in the plane where the benzene ring is located.

4 Linear structure of acetylene: The 2 carbon atoms and 2 hydrogen atoms in the acetylene molecule must be in a straight line with a bond angle of 180°. When one hydrogen atom in the acetylene molecule is replaced by another atom or cluster of atoms, the atom that replaces the hydrogen atom must be collinear with the other atoms of the acetylene molecule.

2. Characteristics and combination rules of valence bonds.

1 In covalent molecules, the atoms that form covalent single bonds can rotate around the axis, for example, the benzene ring in the benzene molecule can rotate with any carbon-hydrogen bond as the axis, and the atoms that form double bonds and triple bonds cannot rotate around the axis, so the atoms are certain coplanar and some may be coplanar.

2 When two atoms in a linear molecule are in a plane, all the atoms in the molecule must also fall in that plane.

3 When three atoms in a coplanar line that are not in the same line are in the other plane, the two planes must overlap, and all atoms in the two planes must be coplanar.

Right. Ethylene is a flat quadrilateral structure.

One bromine atom in ethylene bromine replaces the hydrogen atom in the original structure, although it is no longer a planar rectangle, but it is still a planar structure, that is, they are all in the same plane. Regardless of how many hydrogen atoms are replaced, this structure of ethylene is such that all the atoms are in the same plane.

Yes, the chemical bond is a double bond. Imitation of ethylene is in the same plane.

Yes, a double bond is a planar structure.

As long as the cd contains saturated carbon atoms, the 4 atoms connected to the saturated carbon atom must be on the 4 vertices of the tetrahedron, so the atoms in the option cd cannot be on the same plane again. Both the benzene ring and the carbon-carbon double bond are planar structures, so it is possible that the atoms in AB are in the same plane. The answer is CD.

The key to judging whether a molecule is coplanar and collinear is to figure out the structure of methane, ethylene, ethylene, and benzene, and then add a single bond to rotate, and a double bond can not rotate to solve all the problems.

Methane, the spatial structure is a tetrahedral structure, with a maximum of three points coplanar.

Ethylene, the spatial structure is planar and rectangular, six points are coplanar, the covalent bond angle is 120 degrees acetylene, the space structure is linear, four points are collinear, and the bond angle is 180 degrees.

benzene, the spatial structure is planar hexagonal, and the bond angle is 120 degrees; Four-point collinear.

When solving the problem, be sure to write the relevant structure as a spatial structure.

For example, there are up to 7 atoms coplanar.

One c atom is attached to three atoms, and these four atoms must be coplanar.

a. Acetylene is a straight structure, all atoms are in the same straight line, and all atoms are in the same plane, so A does not match;

b. Ethylene is a planar structure, and all atoms are in the same plane, so B does not conform;

c. Ethane has 2 methyl groups and has the structure of methane, and all atoms cannot be in the same plane, so C is compliant;

d. Benzene is a planar structure, and all atoms are in the same plane, so D does not match;

Therefore, C

a ethane has the structural characteristics of methane, and all atoms cannot be in the same plane, so a is wrong;

b ethylene has a planar structure, vinyl chloride can be regarded as a chlorine atom replacing a hydrogen atom in ethylene, all atoms are in the same plane, so b is correct;

c ethanol contains methyl and methane structural characteristics, all atoms cannot be in the same plane, so c is wrong;

d acetaldehyde contains methyl groups, which has the structural characteristics of methane, and all atoms cannot be in the same plane, so d is wrong

Therefore, choose B

Vinyl chloride structure is similar to ethylene in that both are planar structures and all atoms are coplanar. Bromobenzene is also coplanar.

Both are true.

Vinyl chloride atoms are all in the same plane, which is true, and it may be due to other reasons

Because the double key is not rotatable! When the polymerization reaction occurs, all the doubles will be arranged in the same plane... begging

How can it all be in one plane? After polymerization, they are saturated bonds that can rotate freely, and the hydrogen atoms can be rotated as they want.

A test question analysis: ethane is an alkane, all the atoms in the molecule cannot be in the same plane, ethylene and benzene are planar structures, acetylene is a linear structure, all the atoms in the molecule are in the same plane, the answer is A.

Comments: This question is an examination of basic test questions, the difficulty of the test questions is moderate, and the focus is on the examination and training of ability. It is conducive to cultivating students' abstract thinking ability and flexibility and adaptability.