The answer is D, species!
Hope this helps!
        
                    
             
        
        
        
Potassium or any other metals.
        
             
        
        
        
Answer:
Molecules and small particles in the atmosphere change the direction of light rays, causing them to scatter. Scattering affects the color of light coming from the sky.
Explanation:
 
        
             
        
        
        
Answer:

Explanation:
Here in Calcium Chloride ionic bond is present in between calcium and chlorine atoms. As we know according to Octet rule calcium have two excess atoms and for matching nearest noble gas electronic configuration. It donate two electrons to gain more stability and form  , while chlorine is deficient from one electron to meet nearest noble gas electronic configuration therefore two chlorine atoms accept excess electron from calcium individually and form two
, while chlorine is deficient from one electron to meet nearest noble gas electronic configuration therefore two chlorine atoms accept excess electron from calcium individually and form two ions.
 ions. 

Hence aqueous solution of calcium chloride breaks the ionic bond pairing in one  and two
and two ions:
ions: 