#1
Who proposed the plum pudding model of the atom?
#2
What is the name of the model that suggests electrons move in fixed orbits around the nucleus?
#3
What is the charge of an electron?
#4
Who discovered the nucleus of an atom?
#5
What is the maximum number of electrons that can occupy the first shell of an atom?
#6
Who proposed the planetary model of the atom?
#7
What is the charge of a proton?
#8
What is the charge of a neutron?
#9
What does the atomic number of an element represent?
#10
Who proposed the concept of electron shells or energy levels?
#11
Who proposed the quantum mechanical model of the atom?
#12
What is the name of the model that describes the atom as mostly empty space with a dense nucleus at its center?
#13
Who proposed the concept of the wave-particle duality of matter?
#14
What is the modern description of the arrangement of electrons in an atom?
#15