Question

や

化学です。(1)と(2)の解き方の違いが分かりません

次の構造式で表される有機化合物を同じ化合物どうしにまとめよ。
HHHHH
1
H-C-C-C-C-C-H
HHHHH
H
C-H
H-C-H H
H-C-C-H
H-C-O-I
H-C-H
5 H-C
HHHH
H-C-C-C-C-H
②
H
H-C-H
H
H-C-
H H
⑥ H-C-C-C-H
CH3 H CH3
H
H
H-C-H
H-C-H
H
3
H
HH
④
H-C-
C-H
H-C-C- -C-H
H-C-H H-C-H
I
H
H
HHHH
H CH3 H
T
7 H-C-C- -C-H
HH CH3
|
H CH3 H
8 H-C-C-C-H
HH CH3
3
(2)
⑪
CH3
(3)
(5)
⑥
CH3
CH3
CH3 H
C=C
C
CH3
H
CH3-CH2
H
H
CH3
H
H
4
H
CH3
4
C=C
C=C
C=C
4
CH3
CH3
H
H
H
H
CH3
H
3
3
解答
(1)
②⑥,
8
(2)