What’s the formula for the ionic compound composed of cesium and nitride

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

Which of the following units is not an official si unit? mole liter kilogram ampere