C1 - Atomic structure and the periodic table Flashcards
1
Q
An atom of gallium has an atomic number of 31 and a mass number of 70. Give the number of electrons protons and neutrons in gallium
A
Electrons - 31
Protons - 31
Neutrons - 39
2
Q
What is an isotope
A
An element with a different number of neutrons but the same amount of protons
3
Q
How many atoms are in one particle of Na2CO3
A
6 Na-2 C-1 O-3
