Atomic Structure Flashcards
What are the rings surrounding the nucleus of the atom called?
Shells
What is the special, collective name for protons, neutrons and electrons?
Subatomic particles
What sits in the middle of the atom?
The nucleus
What particle sits on the shells
Electrons
What particles are stored in the nucleus?
Protons and neutrons
What relative charge do protons have?
+1
What relative charge does neutrons have?
0
What relative charge do electrons have?
-1
What is the relative mass of an electron?
1/1836
What is the relative mass of a proton
1
What is the relative mass of a neutron?
1
Where is the mass number on an element
The top number (number of protons + number of neutrons)
Where is the atomic number of an element?
On the bottom
How do you calculate the number of neutrons?
Mass number - atomic number = Neutrons
What is the definition of the atomic number?
Number of protons (which is the same number of electrons)
