Question

name of the student: kamila cruz rodriguez
date: 10/3/2025

1. who is known as the father of modern atomic theory?

a) j.j. thomson
b) john dalton
c) ernest rutherford
d) niels bohr

1. the nucleus of an atom contains:

a) protons only
b) electrons only
c) protons and neutrons
d) electrons and neutrons

1. the relative charge of an electron is:

a) +1
b) -1
c) 0
d) +2

Explanation:

1. John Dalton is credited with the development of modern atomic theory through his postulates about atoms being the smallest indivisible particles of matter.
2. The nucleus of an atom contains protons (positively - charged) and neutrons (neutral).
3. An electron has a relative charge of - 1.

Answer:

1. b) John Dalton
2. c) Protons and Neutrons
3. b) -1