Atomic Numbers And Mass Numbers Flashcards
1
Q
Define mass number
A
The mass number of an element is the sum of the number of protons and neutrons in the nucleus of an atom of that element
2
Q
What is the nuclear formula of an element?
A
It is a method of summarising information about an element
3
Q
What letter usually indicates mass number?
A
A
4
Q
What letter usually indicates atomic number?
A
Z
