GENERAL KNOWLEDGE

Detailed explanation-1: -* Caesium is the softest metal with the Mohs hardness of 0.2.

Detailed explanation-2: –Therefore two metals that are soft in nature are Na which can be cut with a knife and Cs which is the softest in the group.

Detailed explanation-3: -Cesium is a rare, silver-white, shiny metal with brilliant blue spectral lines; the element’s name comes from “caesius, ‘’ a Latin word meaning “sky blue.” It is the softest metal, with a consistency of wax at room temperature.