Answer: The pressure of a gas will increase when there is a decrease in the volume of the gas. 
Explanation: according to Boyle's law, the volume of a gas will decrease when the pressure is increased at constant temperature and vice versa. 
 
        
             
        
        
        
Unfortunately you did not specify the electronic configuration in the question, however since one of the answers must be a halogen, i took the liberty to attach an image with the configuration (both the simple numeric and spdf form) for all the halogen and all you have to do is match the electronic configuration you have in your question to the one in the table attached and you can then deduce the answer.
Hope this helps.
 
        
        
        
It would be C i’m pretty sure
        
             
        
        
        
The answer to your question is,
Metalloids. They are a mix of elements that are both metals and non-metals in one.
-Mabel <3
 
        
                    
             
        
        
        
sodium cloride is salt created from sodium Na and chlorine Ci
Na-sodium Ca- calcium
Ci-chlorine FL- flerovium
Ca- calcium Br-bromine
H- hydrogen He-helium