All of the Noble Gases, which are on the right side of the periodic table, have a full outer energy level. The elements that are Noble Gases are the following: <span>Neon Argon Krypton Xenon Radon Ununoctium. 
Hope this helps.</span>
        
             
        
        
        
By Hubble theory in which universe is expanding, 
        
             
        
        
        
True IF the engine is 25% efficient. False otherwise.
 
        
             
        
        
        
Answer:
10.99 m 
Explanation:
m = mass of the block = 0.245 kg 
k = spring constant of the vertical spring = 4975 N/m
x = compression of the spring = 0.103 m 
h = height to which the block rise 
Using conservation of energy 
Potential energy gained by the block = Spring potential energy
mgh = (0.5) k x²
(0.245) (9.8) h = (0.5) (4975) (0.103)²
h = 10.99 m