Question

Which of the following pairs have different hybridisation and same shape? (i) $NO_3^-$ and $CO_3^{2-}$ $\quad\quad$ (ii) $SO_2$ and $NH_2^-$ (iii) $XeF_2$ and $CO_2$ $\quad\quad$ (iv) $H_2O$ and $NH_3$

• A. (i) and (iv)
• B. (ii) and (iv)
• C. (ii) and (iii)
• D. None of these

Answer 1

Answer: (C)

(ii) and (iii)

Answer 2

(i) $\underset{{(sp^2, trigonal planar)}}{ {NO3^-}}$ $\quad\quad\quad$ $\underset{{(sp^2, trigonal planar)}}{ {CO3^2-}}$ $\quad\quad\quad$ Same hybridisation and same shape. (ii) $\underset{{(sp^2, bent)}}{ {SO2}}$ $\quad\quad\quad$ $\underset{{(sp^3, bent)}}{ {NH2^-}}$ Different hybridisation and same shape. (iii) $\underset{{(sp^3d, linear)}}{ {XeF2}}$ $\quad\quad\quad$ $\underset{{(sp, linear)}}{ {CO2}}$ Different hybridisation and same shape. (iv) $\underset{{(sp^3, angular)}}{ {H2O}}$ $\quad\quad\quad$ $\underset{{(sp^3, pyramidal)}}{ {NH3}}$ Same hybridisation and different shapes.