Group 1 - Alkali Metals

As you go down Group 1, the alkali metals become...
1. 1- Bigger atoms
2. 2- More reactive
3. 3 - Higher density
4. 4 - Lower melting point
5. 5 - Lowing boiling point
1) The alkali metals are very reactive
1. Have to be stored in oil and handled with forceps
2) They are lithium, sodium, potassium and a few others
1. Learn them! Also rubidium and caesium
3) All have 1 outer electron
1. Makes them very reactive and have similar properties
4) All form 1+ ions
1. Keen to lose their one outer electron
5) Always form ionic compounds
1. So keen to lose the outer electron there's no way they'd consider sharing - covalent bonding out of the question
6) Reaction with water produces hydrogen gas
Anmerkungen:
- 1 - When lithium, sodium or potassium are put in water, they react very vigorously 2 - Move around the surface fizzing furiously 3 - Produce hydrogen - potassium gets hot enough to ignite it. A lighted splint will indicate hydrogen by producing the 'squeaky pop' as H2 ignites 4 - They form a hydroxide in solution - ie. aqueous OH- ions 2Na(s)+2H(2)0(l) = 2NaOH(aq)+H(2)(g) 2K(s)+2H(2)0(l)= 2KOH(aq)+H(2)(g)

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	Erstellt von jadepalmer98 vor etwa 11 Jahre