Atomic Structure Flashcards
1
Q
What is an atomic number
A
Is the number of protons in the nucleus of an atom
2
Q
What is the mass number
A
Is the total number of protons and neutrons in the nucleus of an atom
3
Q
Where is the cluster of protons and neutrons found
A
The centre (the nucleus)
4
Q
What are the names of the atoms sub atomic particles
A
Protons, neutrons, electrons
5
Q
Where do the electrons live
A
In shells
6
Q
How are elements organised on the periodic table
A
Atomic number, atomic mass
7
Q
What’s the mass and charge of the sub-atomic particles
A
Proton: mass= 1
charge=+1
Electron: mass= 1/1840
charge= -1
Neutron: mass= 1
charge= 0
8
Q
Atomic number=
A
Number of protons inside nucleus + tells us the amount of electrons
