Explanation:
Different atoms binds their outermost shell electrons with different amount of energy.
The amount of energy required to remove an electron from an atom is the ionization energy. 
- Ionization energy measures the readiness of an atom to lose electrons. 
 - From the given problem, we can infer that in group O the ionization energy decreases down the group. 
 - Helium has the highest ionization energy. 
 - Down a group on the periodic table, ionization energy decrease because: 
 
-   atomic radii increases down the group. 
 -  there is an increasing shielding/screening effect of inner shell electrons on the outermost shell electrons. 
 
Learn more: 
Ionization energy brainly.com/question/2153804
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Answer:
Explanation:
the forces between the molecules are stronger in solid than in liquids
 
        
             
        
        
        
Answer:
Rubber, or another insulator. 
Explanation:
I'm not sure what the options are, but Sue would probably want an insulator so that the heat is trapped, keeping her hands cool. 
 
        
                    
             
        
        
        
I suggest you to go with C !! it is absolutely wrong sentence !! 
increasing the gas particles will increase the collision between them so !!
your answer is C !!
        
                    
             
        
        
        
The question is incomplete. Complete question is attached below.
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Correct Answer: <em>Option 1) 2-pentene</em>
Reason:
Following are the IUPAC rules for naming the compound
1) Select the 
longest carbon chain. In present case longest carbon chain has 5 carbon atom. Hence, it is a pentane derivative.
2) In case of alkene, 
replace 'e' of alkane by 'ene'3) Give 
lowest number to function group. In present case, it is double bond.
Applying above rules, the IUPAC name of compound is 
2-pentene