Set of isoelectronic species is
1. `H_2, CO_2, CN^-, O^-`
2. `N, H_2S, CO`
3. `N_2, CO, CN^-, O_2^(+2)`
4. `Ca, Mg, Cl`

The number of paramagentic species among the following is O_(2), CO, N_(2), C_(2), CsO_(2), BaO_(2), CO_(2)

Balance the equations : C_2H_4+O_2 to CO_2 + H_2O

Calculate the molecular masses of H_(2), O_(2), Cl_(2), CO_(2), CH_(4), C_(2)H_(6), C_(2)H_(4), NH_(3), CH_(3)OH .

Which of the following are chelating ligands? H_(2)O C_(2)O_(4)^(2_) , EDTA^(4-) , CO_(3)^(2-) , SCN^(-) , CO, C_(2)H_(4)

Balance the equations : C_2H_4 + O_2 to CO_2 + H_2O

The number of greenhouse gases of the following is ________. CO_(2), O_(2),N_(2)O, CH_(4), CFCs, CO, H_(2)O (g), O_(3)

Balance the following equation : C + H_2SO_4 to CO_2 + H_2O + SO_2 .

How many of these molecules are diamagnetic and have bond order more than 2 O_(2)^(2+), CO, overset(-)CN, NO, NO^(+), N_(2), O_(2)^(+), N_(2)^(2-), O_(2)^(2-)

Balance the chemical equations : K_2CO_3 + H_2SO_4 to K_2SO_4 +CO_2+H_2O

On the basis of the structures, predict which of the following molecules are polar? H_2 O , CO_2 ,Be Cl_2 ,PH_3,CH_4 ,C Cl_4, SO_2.