The correct statement about ICI5 and \({\rm{ICI}}_4^ -\) is:
1
ICI5 is trigonal bipyramidal and \({\rm{ICI}}_4^ -\) is tetrahedral
2
ICI5 is square pyramidal and \({\rm{ICI}}_4^ -\) is tetrahedral
3
ICI5 is square pyramidal and \({\rm{ICI}}_4^ -\) is square planar
4
More than one of the above
5
None of the above