Pretty much. Below I'll list out some perks of the element, including some of the things you mentioned before.
- Caesium Explodes on contact with water
- Upon exploding, Caesium leaves a large amount of smoke behind
- Caesium evaporates in heated air and when exposed to fire
- When evaporating Caesium gives off a blinding light that blinds anyone in short range of it
- Caesium dissolves solid objects and metals
- Caesium causes burns upon contact with the skin or eyes
All of these perks give us room to make some nice techs, such as a tai/ken move that makes it so your strikes do burning damage upon contact with the opponent's skin, or using it to corrode solid techs such as steel, earth, or wood. The smoke it leaves behind when exploding will also be filled with our chakra, allowing it to create a kind of chakra filled smokescreen that blinds certain doujutsu and throw off sensors.