Classify the oxides as neutral, acidic amphoteric and basic
`CO, B_2O_3, SiO_2, Al_2O_3, PbO_2, Tl_2O_3`

a) Howthe metallic character varies in the periodic table? b) Categorize the following oxides into acidic, basic, neutral and amphoteric: Al_20_3 , Na_2O , CO_2 , Cl_2O_7 , MgO, CO, As_2O_3 , N_2O

Which of the following is acidic and why? SiO_2 , Al_2O_3 , PbO_2 , SnO_2 .

Classify the following on the basis of magnetic properties and name of class. Al, TiO_2, CO, MnO_2 , Benzene, O_2, NaCl, NH_3, Fe^(3+), Ni

Out of the following how many oxides are basic: TiO,Sc_2 O_3,Ti_2O_3, , VO , V_2 O_5 , CrO_3 , Cr_2 O_3 , CuO,TiO_2

Nitrogen forms a number of oxides and oxoacids. Which of the following is a neutral oxide of Nitrogen? N_2 O , N_2 O_5 , NO_2 , N_2 O_4

Which of the following oxides is most acidic N_2 O_5 P_2 O_5 As_2 O_5 Sb_2 O_5

Which of the following is amphoteric in nature: H_3 O^+ , Cl^- , HSO_4^- , CO_ 3^2-

Which of the following oxides of nitrogen is solid NO_2 N_2 O N_2 O_3 N_2 O_5

Which of the following equation represent oxidation, reduction reaction? Identify each oxidising agent and each reducing agent. a) K O H+H_2 O_2 rarr K H O_(2+)H_2 O b) Cr_2 O_7^(2-)+2 OH^- rarr 2 CrO_4^(2-)+H_2 O c) K+O_2 rarr K_2 O d) Ca(HCO_3)_2 rarr CaCO_3+CO_2+H_2 O

The acidic, basic or amphoteric nature of Mn_2 O_7 ,V_2O_5, and CrO are respectively