6. Write the chemical formula for the ionic compound formed by each pair of ione. 2. NHa+and NOi : b. H+and (Cr2Q2)2 : c. Cu+and COs2; d. Na+and HCO4; 7. Encircle the compounds you would predict to be ionic? a. Ba(OH)2 : b. CH2O; c. NH2CONH2= d. (NH4)2CrOn : e. C1H16 f. NH2= 8. Name the ionic compound formed by each pair of ions. Use the Systematic system of naming variable charged metals using Roman numerals enclosed in parenthesis. 9. Give two names far each compcund. a. Co(HCO2) a: b. LiHSO3; 10. Calculaie the net charge for each compound? Show your calculation. a. Cr2O2;2Cr2++3O2=2(3+)+3(2)=66=0 b. CrO