Question

(a) Why Cesium and Gallium melt in our palm?

Answer 1

Because they have very low melting points compared to most other metals (except for mercury). The melting point of gallium is 29.77°C (85.59°F), which is low enough that the temperature of your skin may be warm enough to melt it. The melting point of cesium is 28.44°C (83.19°F), also within range of normal skin temperature. (around 32 degree celsius

Answer 2

Answer:

gallium and cesium

Explanation:

gallium and cesium are  the metals that melt when kept on palm.  

because  

they have very low melting point

their melting point is around 28 degree Celcius

and just the heat in our palm is enough melt them easily