Question

This statement is writing in my textbook can someone please explain to me what it mean:

Determining the position of electrons, eliminates their wave properties.

Answer 1

It's a statement about the Heisenberg Uncertainty Principle. That says that if you can know exactly where the electron is sitting, you can not know its velocity. The reverse is true, also. If you know how fast it is traveling, you can not at any instant exactly where it is. Both are true because electrons are so small that what we do to it when we measure its speed affects where it is.