Periodic Table Groups
- Created by: Mgseme2005
- Created on: 03-04-20 15:09
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Alkali Metals
The elements found in group 1 are known as alkali metals , they have 1 electron in their outer shell which is usally given away during chemical reactions . All metal react with water to produce a metal hydroxide and gas
Lithium (Li)
- electron structure (2.1)
- Least reactive
- Burns with a red flame when it reacts with oxygen
- Floats on the surface and there are bubbles of hydrogen gas
- Fizzes steadly and floats until it dissappears
Sodium (Na)
- electron structure (2.8.1)
- More reactive than lithium because it's outer electron is futher than the nucleus
- Metal floats on the surface then it burns with a yellow/orange flame when reacting with oxygen
- When reacting with water, sodium fizzes and metals to produce a ball which moves around on the water surface
Potassium (K)
- electron structure (2.8.8.1)
- More reactive than sodium and lithium because it's outer electron is least reactive and futher away from nucleus
- Metal floats on surface and when burnt with oxygen releases lilac flame.
- When reacting with water, the hydrogen produced ignites instantly ans the metal also sets alight.
Properties of alkali metals:
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