30:00

lesson 3 four quantam numbers secondary two part 1 💪✌️

28:47

lesson 4 principles of distribution electrons secondary two part 1 💪✌️

29:50

The modern periodic table secondary two part 1 💪✌️

17:16

lesson 4 principles of distribution electrons secondary two part 2 ✌️💪

38:26

حل كتاب الامتحان الفصل الثاني درس الاميتر

23:00

the modern periodic table secondary two part2💪✌️

1:56:54

revision 1st of chemistry second term(part 1)✌️💪🧪💥

27:56

الملف اللولبي ببساطة 💡 | كل التفاصيل خطوة بخطوة