مدارس

رسم تفاعلي للخلية الحيوانية - بالإنجليزية رسم تفاعلي للخلية الحيوانية - بالإنجليزيةllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

IA								VIIIA
1 H هيدروجين 1.01	IIA		IIIA	IVA	VA	VIA	VIIA	2 He هيليوم 4.00
3 Li ليتيوم 6.94	4 Be بيريليوم 9.01		5 B بروم 10.81	6 C كاربون 12.01	7 N نيتروجين 14.01	8 O أكسيجين 16.00	9 F فليور 19.00	10 Ne نيون 20.18
11 Na صوديوم 22.99