Uses of Magnesium

What happens to atomic radius down a group

Atomic radius increases down a group as more shells

What happens to first ionisation down a group

Decreases down a group, atomic radius increases so more shielding so easier to remove one mole of electrons

What happens to Melting point down group 2

Down a group , larger cations , so weaker metallic bonds down a group, so MP and BP decreases

What element does not follow the trend of decreasing MP down group 2

Mg - has the lowest MP in group 2

What is a use for magnesium

Extraction of Titanium

What is extraction

Separate metal from ore

Equation for extraction of Titanium with carbon

TiO2 (s) + C_(s) → TiC _(s) + O _(s)

Why is carbon not used to extract Titanium

Forms TiC which is very brittle so useless as a engineering material

Extraction of Titanium with Magnesium

1 . Titanium dioxide heated with carbon and chloride→ titanium chlorine

• TiO ₂ + 2Cl ₂ + 2C →TiCl₄ + 2CO

2 Titanium is reduced by magnesium→ Magnesium chloride

• TiCl ₄ + 2Mg →Ti + 2MgCl₂