Isotopes Flashcards
1
Q
What is an ion?
A
It is an atom that gain/lose electrons, it then becomes a positive/negative ion
2
Q
What is an isotope
A
It is an atom of the same element that has a different number of neutrons.
3
Q
How to work out number of electrons and electrons
A
The atomic number is the number of electrons, to find neutrons, take away the atomic number from atomic mass
4
Q
Group numbers
A
If an element is in group 2, it will have a positive 2 formula, if in group 6 it will have a negative 2 formula
