Grade 7 Chemistry atomic structure Choose any element from the first 20 elements in periodic table and draw NEATLY showing protons – neutrons – electrons and electronic configuration
Grade 7 Chemistry atomic structure Choose any element from the first 20 elements in periodic table and draw NEATLY showing protons – neutrons – electrons and electronic configuration
![[C3-Worksheet Reference] Atoms, Elements & Compounds](http://s3.studylib.net/store/data/025600544_1-ac81b719e1b567117977c0e1deb5ecd6-300x300.png)
