How is yall dayz so far tell me my lill shawty's an homeboyz??

How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal

What volume of argon gas is equal to 1.60 grams of argon

Where are the noble gases located in the periodic table? a. in the center b. on the left side c. in the upper right corner d. on the far right side