Atoms and Isotopes Flashcards
1
Q
How would you describe the mass of protons and neutrons?
A
The masses are similar
2
Q
What is the mass of electrons?
A
1/2000
3
Q
Define an isotope.
A
Isotopes are atoms of the same element with the same number of protons (and electrons) but a different number of neutron.
4
Q
What letter represents the chemical symbol?
A
X
5
Q
What letter represents the nucleon number (mass number)?
A
A
6
Q
What letter represents the proton number (atomic number)?
A
Z
