A section of the Periodic Table is shown. Which row gives the correct description of the properties of elements W, X, Y and Z?
- Ahas variable oxidation states: W; reacts with cold water: Y; very unreactive: Z; has four outer shell electrons: X
- Bhas variable oxidation states: X; reacts with cold water: W; very unreactive: Y; has four outer shell electrons: Z
- Chas variable oxidation states: Z; reacts with cold water: W; very unreactive: Y; has four outer shell electrons: X
- Dhas variable oxidation states: Z; reacts with cold water: Y; very unreactive: X; has four outer shell electrons: W