I need help with 3 question.


1.) Which elements are least likely to react with other elements?

a.) metals
b.) nonmetals
c.) noble gases
d.) transition elements


2.) Which is a binary ionic compound?

a.) O2
b.) NaF
c.) H2SO4
d.) CU(NO3)2


3.) which of the following formulas represents a non polar molecule?

a.)N2
b.) H2O
c.) NaCl
d.) HCl