1. Валентность. урок 1. Электронная оболочка
Валентность. урок 2. переменная валентность.
Валентность. урок 3. донорно- акцепторный механизм
4 months ago 02:21:59 1
4 months ago 00:15:39 1
4 months ago 01:15:50 1
4 months ago 01:22:14 14
4 months ago 00:06:09 1
4 months ago 00:07:13 1
5 months ago 02:32:21 1
5 months ago 01:24:43 1
5 months ago 02:15:42 1
5 months ago 02:09:27 1
6 months ago 00:00:00 1
6 months ago 00:38:50 1
6 months ago 01:32:31 1
6 months ago 00:35:51 1
6 months ago 02:00:24 1
7 months ago 01:13:05 1
7 months ago 00:01:51 1
7 months ago 00:01:49 1
7 months ago 02:33:46 1
7 months ago 02:50:27 1
9 months ago 01:23:50 1
9 months ago 00:45:11 1
10 months ago 03:20:34 1
10 months ago 02:31:42 2
