Q.

A molecule with the formula AX2Y2 has all its elements from p-block. Element A is rarest, monotomic, non-radioactive from its group and has the lowest ionization energy value among X and Y. Elements X and Y have first and second highest electronegativity values respectively among all the known elements. The shape of the molecule is:     [2025]

1 Square pyramidal  
2 Octahedral  
3 Planar  
4 Tetrahedral  

Ans.

(1)