Topic 4b- Current nuclear model Flashcards
1
Q
How much smaller is the radius of the nucleus compared to the radius of the atom?
A
10,000 times smaller
2
Q
What are the relative masses of protons, neutrons and electrons?
A
- proton- 1
- neutron- 1
- electron- 1/2000
3
Q
What are the realtive charges of protons, neutrons and electrons
A
- proton → +1
- neutron → 0
- electron → -1
4
Q
What is the atomic number equal to?
A
The number of protons
5
Q
What is the mass number equal to?
A
The number of protons plus the number of neutrons
6
Q
What do isotopes have
A
Different numbers of neutrons
