Which of the following set contains species having same angle around the central atom?

Which of the following species contain six electrons around the central carbon atom ?

Which of the following pair contains species having nearly same charge density but they do not belong to same group ?

Which of the following set of species have planar structure?

Which of the following set of species have planar structure?

From among the following triatomic species the least angle around the central atom is in

In which of the following species the angle around the central atom is exactly equal to 109^(@)28 ?

In which of the following species the angle around the central atom is exactly equal to 109^@ . 28'

In which of the following species the angle around the central atom is exactly equal to 109^(@)28 ?

Among the following species, the least angle around the central atom is in :