Topic 2.1:Structure of Atom|Introduction|Chp#2|Lec#1|9th Class New Chemistry 2025|
Автор: Chemistry by Shoaib Javed
Загружено: 2025-03-10
Просмотров: 4404
#chapter2
#9thclasschemistry
#chemistry
#newbook
#atomicstructure
#How elements are different from one another?
#sulphur
#gold
#bromine
#solids
#liquids
#gases
#metals are lustrous
#nonmetals are dull
#greece philosopher
#democritus work
#john Dalton work
#19thcentury
#electrons
#protons
#discharge tube experiment
#chemistry by Shoaib Javed
#ptcb
#ptb
#curiculam
#nationalcurriculum
#topic 1.2
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