The molecular shapes which have the most electron pairs (both shared and unshared) around the central atom are linear-shaped.
The molecular shapes are the shapes like linear, trigon planner, octahedral, tetrahedral, etc. which depend on the number of atoms and the lone pair and bond pair of atoms.
In linear shape, a maximum number of electrons take part in the hybridization and can also have lone pairs to give repulsion to the bond pairs of the atoms and only 2 electrons take part in bond formation.
Therefore, linear-shaped are the molecular shapes that have the most electron pairs (both shared and unshared) around the central atom.
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