A molecule with the formula AX 4 Y has all it's elements from p-block. Element A is rarest, monoatomic, non-radioactive from its group and has the lowest ionization enthalpy value among A, X an

Question

A molecule with the formula AX 4 ​ Y has all it's elements from p-block. Element A is rarest, monoatomic, non-radioactive from its group and has the lowest ionization enthalpy value among A, 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 :

TestHub · Accepted Answer

Given A is rarest, monoatomic, non-radioactive p-block element and form $AX_{4} Y$ type of molecule.
$∴$ It is concluded that it is Xe
It is given the electronegativity of A is less than X & Y
It is given the electronegativity of $X & Y$ is highest and second highest respectively among all element.
$∴ X & Y$ are $F & O$
$∴$ Compound is consider as $XeOF_{4}$ with square pyramidal shape.

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