 
			 
			MCQOPTIONS
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				| 1. | An increase in the number of electrons increases the | 
| A. | Van der Waal's forces | 
| B. | enthalpy change of vaporization | 
| C. | boiling points of noble gases | 
| D. | melting point of Nobel gases | 
| Answer» C. boiling points of noble gases | |