Which of the two ions from the list given below, have the geometry that is explained by the same hybridisation of orbitals, NO ₂⁻, NO ₃⁻, NH ₂⁻, NH ₄⁺, SCN ⁻ ?

Step-by-step solution

array ll NO ₂⁻ & s p^2 NO ₃⁻ & s p^2 NH ₂⁺ & s p^3 array array ll NH ₄⁻ & s p^3 SCN ⁻ & s p array NO ₂⁻ and NO ₃⁻ both have the same hybridisation. [ Co ( H ₂ O )₆ ]²⁺ has minimum number of unpaired electrons and thus, minimum paramagnetic behaviour.