Atomic Structure Flashcards
1
Q
Structure of an atom
A
Protons and neutrons in nucleus and electrons in shells
2
Q
Protons - neutrons - electrons
Relative charge
A
P= 1
E= -1
N= 0
3
Q
Protons - neutrons - electrons
Relative mass
A
P= 1
E= 1/1840
N=1
4
Q
What is the atomic number
A
The number of protons and electrons in an atom
5
Q
What is the mass number
A
Total number of protons and neutrons in an atom
6
Q
How do you find out number of neutrons
A
Mass number - atomic number
7
Q
How many electrons can be in the 1st 2nd and 3rd shell
A
1= 2
2=8
3=8
8
Q
Short hand of oxygen
A
2,6
