Shell Groups Flashcards
1
Q
What do many atoms have?
A
- One or two electrons in their outer shell
- They are keen to get rid of them, as they will then only have full shells left
2
Q
What happens when they lose these electrons?
A
- They are left as an ion
3
Q
What do Sodium, Potassium and Calcium have?
A
- One or two electrons
4
Q
What have Groups 6 + 7 got?
A
- They have outer shells which are nearly full
- Oxygen + Chlorine are examples
5
Q
Describe what Group 6 + 7 want to do
A
- Gain electrons to full shell up and become ions
6
Q
Which elements are most likely to form Ions?
A
- Those in groups 1, 2, 6 + 7
7
Q
What are Groups 1 + 2?
A
- Metals, which lose electrons to form +ve ions or cations
8
Q
What happens when any of these cations form/join with anions?
A
- They form Ionic Bonds, which are only elements at the opposite sides of the periodic table
