The SI unit for specific heat capacity is the joule per kilogram Kelvin, J?kg-1?K-1 or J/(kg?K), which is the amount of energy required to raise the temperature of one kilogram of the substance by one Kelvin
        
                    
             
        
        
        
Answer:
iron (III) oxide is a gas
 
        
             
        
        
        
Atomic radii increase when going down a group and decreases when going towards the anion periods. So A and D.
        
                    
             
        
        
        
Answer:
The one with the greatest mass would be the one that has the most things in the nucleus, protons and nutrons
Explanation: