Question

describe one reason why models of atoms we usually see in textbooks or diagrams are not perfectly accurate representation of real life atoms

Answer 1

"One way atomic models are often inaccurate is that electrons are way smaller than they portray. In reality, atoms have incredibly small electrons."

A proton is about 1,835 times more massive (mass not size) than an electron. An electron's physical dimensions are so small, that we will never know how small they really are.