Periodic table Flashcards
1
Q
What does the period number represent in the periodic table?
A
How many shells there are.
2
Q
What does the group number represent in the periodic table?
A
How many electrons are in the outer shell.
3
Q
What does the mass number represent in the periodic table?
A
Number of protons and neutrons.
4
Q
What does the atomic number represent in the periodic table?
A
Number of protons (which is equal to the number of electrons).
