Answer the following questions-
1. Identify the element with a five electrons in the outer subshell
2.  Identified the element that would tend to lose two electrons 
3. Identify the element that would tend to gain two electrons
4. identify the group having metals nonmetals liquid as well as gas at the room temperature
5. show by chemical reaction with water that Na2O is a basic oxide and CL2O7 is an acidic oxide