question_answer 3)

Write the state of hybridisation of carbon in the following compounds and shapes of each of the molecules. (a)\[{{H}_{2}}C=O\] (b)\[C{{H}_{3}}F\] (c)\[H-C\equiv N\]

Answer:

(a) In\[{{H}_{2}}C=O,\] C is \[s{{p}^{2}}\]-hybridized, hence formaldehyde is trigonal planar. (b) In \[C{{H}_{3}}-F,C\] is \[s{{p}^{3}}\]-hybridized, hence methyl fluoride is tetrahedral. (c) In \[H\text{ }\text{ }C\text{ }\equiv \text{ }N,\text{ }C\] is \[sp\]-hybridized, hence HCN is a linear molecule.