9. In which of the following reactions hybridisation of underlined species is not changing?(1) NH3 + H+ =NH4+(2) BF3 +F-=BF4-(3) C2H2 + H2 → C2H6(4) All of these

9. In which of the following reactions hybridisation of underlined s

1.	9. In which of the following reactions hybridisation of underlined species is not changing?(1) NH3 + H+ =NH4+(2) BF3 +F-=BF4-(3) C2H2 + H2 → C2H6(4) All of these
Answer» Hence, the first and fourth reactions do not UNDERGO any change in the HYBRIDISATION of the UNDERLINED ATOM.