class 8 science chapter 6 lesson 1
TRANSCRIPT
PowerPoint Presentation
-- :
,
-) ) ) )
-
P+ NE-
11H
= + , 3517 Na = - = - =
, ,
? ? ? ? ?
TRANSCRIPT
PowerPoint Presentation
-- :
,
-) ) ) )
-
P+ NE-
11H
= + , 3517 Na = - = - =
, ,
? ? ? ? ?