3.2.4 - ionic formulae Flashcards
1
Q
what are the charges on group 1 elements?
A
1+
2
Q
what are the charges on group 2 elements?
A
+2
3
Q
what are the charges on group 3 elements?
A
+3
4
Q
what are the charges on group 5 elements?
A
-3
5
Q
what are the charges on group 6 elements?
A
-2
6
Q
what are the charges on group 7 elements?
A
-1
7
Q
what is the conservation of mass
A
cannot create or destroy atoms, only move them around
