Question

Diamine aromatice derivate de la naftalină sunt in numar de:
A. 8;
B. 9;
C. 10;
D. 11
E. 12.

Answer 1

1,2-

1,3-

1,4-

1,5-

1,6-

1,7-

1,8-

2,3-

6,7-

=> 9

=> B.