label each carbon atom with its optimum C-C-C bond angle?

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These are the answers I had…Please help. Explanations would be nice too. Thanks!!

Answer

General guidance

Concepts and reason

Before overlapping with 1s orbital of hydrogen, first the atomic orbitals of carbon undergoes hybridization to form hybrid orbitals. The hybrid orbitals involve in bond formation with hydrogen. Hence, the bond angle depends on the type of hybridization.

Fundamentals

The optimum bond angle for sphybrid orbitals is109.5°. The optimum bond angle for sphybrid orbitals is 120and the optimum bond angle for sphybrid orbitals is .

Step-by-step

Step 1 of 2

The hybridizations of each carbon in the molecule are as follows CH3
CH3
H2C
Нас
sp3
sp
C
sp-
Sp2
CH
sp3
sp2
H2C
sp3
CH
Нас.
sp2
CH
sp2
CH
CH3

If the carbon has 4 single bonds, then the hybridization is . If the carbon has one double bond and two single bonds, then hybridization is . If the carbon has one triple bond or two double bonds, then the hybridization is .

Step 2 of 2

The optimum С-С-Сbond angles are as follows:

CHз
CНз
109.5 degrees
H2С
180 degrees
с
120 degrees
180 degrees
CH
С
109.5 degrees
120 degrees
CH
Hас.
109.5 degrees
120 degr

CHз
CНз
109.5 degrees
H2С
180 degrees
с
120 degrees
180 degrees
CH
С
109.5 degrees
120 degrees
CH
Hас.
109.5 degrees
120 degr


The bond angle at all the hybridized carbon atoms is 109.5°. The bond angle at all the hybridized carbon atoms is 120 and the bond angle at all the hybridized carbon atoms is.

Answer

CHз
CНз
109.5 degrees
H2С
180 degrees
с
120 degrees
180 degrees
CH
С
109.5 degrees
120 degrees
CH
Hас.
109.5 degrees
120 degr

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