As you go down group 1:
- Become more reactive because the outer electron is more easily lost because it is further away from the nucleus
- Have lower melting and boiling points
The alkali metals have low density. The first three float in water
All have one outer electron which makes them very reactive and gives them similar properties
Form Ionic compounds with non-metals
- They are keen to lose their outer electron to form a 1+ ion
- They never covalent bond
- Always form ionic bonds and produce white compounds that dissolve in water to form colourless compounds
When sodium, lithium or potassium are put in water they react vigorously. They float and move around the surface fizzing furiously. They produce hydrogen and potassium even ignites it and causes a squeaky pop. They form hydroxides that dissolve in water to give alkaline solutions
Comments
No comments have yet been made