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Structure of atom
In chapter structure of atom dronstudy class 9 lecture 1 nitin sir saying you have studied in lower class about what is positive and nrgative charge in lower class and saying on 1 electron and proton 1.6×10^-19 coulomb what where we studied these terms i am not able to understand what are you doing mention the chapter name in lower class ?????????
In lower class when you learnt that every matter is made up of small particles called atom and atom is made up of three subatomic particles-electrons, protons and neutrons. Electrons and protons have the same charge of (+ or -) x 10^-19 C. You need to learn these value for the further classes and for solving the numericals.