Ions and Formulas Flashcards
1
Q
what are ions?
A
Ions are atoms that have lost or gained an electron
2
Q
which are the groups most ready to form ions?
A
Group 1+2 and 6+7
3
Q
how do group 1+2 form ions?
A
Group 1 and 2 are metals and so they lose electrons to form positive ions
4
Q
how do group 6+7 form ions?
A
Group
5
Q
how do group 6+7 form ions?
A
Group 6 and 7 are non metals that gain electrons to form negative ions
6
Q
what is the rule of positive charged ions?
A
The charge of the positive ions is the same as the group number of the element
7
Q
how do you work out the formula of an ionic compound?
A
Firstly you need to work out the charges of the ions in the compound. If it is balanced you are finished if not you need to balance the equation.
