Sagot :
Atom
An electron is in a region outside the nucleus. Therefore, an electron A. has less than mass than a proton and has a negative charge.
Explanation:
Since the relative mass of an electron is 1/1840 and a proton is 1. Therefore, the electron relative mass is less than a proton. Then, an electron has negative charge (-1) while a proton has positive charge (1).
What is an Atom?
- The concept of the atom was proposed by Greek Philosopher Democritus that matter is composed of tiny fundamental particles and it is an atom. This term means indivisible or uncuttable.
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