The alkali metals are low melting. Which of the following alkali metals is expected to melt if the room temperature rises to 30^(@)C ?

The alkali metals are low melting. Which of the following alkali metal

1.	The alkali metals are low melting. Which of the following alkali metals is expected to melt if the room temperature rises to 30^(@)C ?
Answer» NA K Rb Cs Solution : The melting point DECREASES down the group because the SIZE INCREASES and the forces in metallic bonding decreases. Melting point of Cs = 302K