Lithium, sodium and potassium are elements in Group I of the Periodic Table. Which of the following statements about these elements is correct?
- ALithium has the highest melting point and the lowest density.
- BLithium has the highest density and the most violent reaction with water.
- CPotassium has the highest melting point and the highest density.
- DPotassium has the lowest melting point and the least violent reaction with water.