Isotopes Flashcards
1
Q
Define an isotope
A
an atom of the same element but it has a different number of neutrons so it has a different mass number.
2
Q
Give an example of an isotope from the periodic table
A
Chlorine
3
Q
How can you tell if an atom is in a certain group?
A
By looking at how many electrons it has in its outer shell
4
Q
Which group is the most reactive?
A
Group 1 - only 1 atom in the outer shell (not a FOS)
5
Q
Which group is unreactive?
A
Group 0 - as it has a FOS
