Atomic Structure Flashcards
1
Q
What is the Mass Number?
A
Number of Protons + Neutrons
2
Q
What is the Atomic Number?
A
Number of protons in the atom (or ion)
3
Q
What is the Relative Atomic Mass?
A
Weighted mean mass of all isotopes of an element (compared to 1/12 C12)
4
Q
What is the Relative Isotopic Mass?
A
Mass of a specific isotope of an element (compared to 1/12 C12)
5
Q
What are Isotopes?
A
Isotopes are atoms with the same number of protons but different number of neutrons
6
Q
What is Relative Formula Mass?
A
Average mass of a Formula Unit (compared to 1/12 C12)
7
Q
What is Relative Molecular Mass?
A
Average mass of a molecule (compared to 1/12 C12)
