Question

From the table of geometries below, determine the correct molecular shapes of XeF4, GeF4, and SeF4. (Enter three letters that correspond to XeF4, GeF4, and SeF4 in order, e.g. ABC, DCE, EBA, etc.)

8. From the table of geometries below, determine the correct molecular shapes of XeF4, GeF4, and SeF4. (Enter three letters that correspond to XeF4, GeF4, and SeF4 in order, e.g. ABC, DCE, EBA, etc.) G) trigonal bipyramid A) square plane B) tetrahedron H) square pyramidal C) octahedron I) linear D) seesaw J) bent E) trigonal pyramid K) icosahedral F) T-shape L) None of the above

Answer 1

1 XeF₄ = Square plane (A)

It is an octahedral but because of the lone pairs, it dictate there 6 Domains around the central atom and the VSEPR theory states any AX₄E₂species with 2 lone pairs is square planar. ( Figure - 1)

Punto u R900 Xefa (figure 1)

2. GeF₄ = Tetrahedron (B)

GeF4 has 4 single bonds and no lone pairs around the central atom. Therefore, from VSEPR, the shape is tetrahedral. AXE species with no lone pair. ( Figure - 2)

3. SeF₄ = Trigonal Bipyramid (G)

GelllIlIF Figure - 2

AX₄E species and it has 4 bond pair and 1 lone pair so possible geometry is trigonal bipyramidal as there is only one lone pair so we mainly consider lone pair - bond pair repulsion for shape , and if we place the lone pair at axial position then angle would be 90 degree and if place it at equatorial positionh then angle would be 120 degree. ( Figure - 3)

Equatorial -Se 1 A taxial F Figure - 3]