Question

total number of molecules in which all the possible bond angle are identical pf3 ,cf4, xef4, PF5,if7,bef2,sp6
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Answer 1

Bond Angles in given molecules

Explanation:

• According to VSEPR theory, we can find the bond angles in given molecules by determining their geometries and shape or hybridization.
• Molecule PF₃ has pyramidal geometry. Their is no repulsion of electrons as size of atoms are big so its value of bond angle is 97°.
• Molecule CF₄ has tetrahedral geometry so it's bond angle is 109.5°.
• Molecule XeF₄ has square planar shape with hybridization sp³d². It's bond angle is 90° and 180°.
• Molecule PF₅ has trigonal bipyramidal shape consists of three fluorine atoms occupy equatorial and two occupy axial positions. The bond angle of axial position is 120° and in between equatorial position is 90°.
• Molecule IF₇ has pentagonal bipyramidal geometry in which there are two angle that are axial angle and equatorial angle. Bond angle of axial position is 90° and of equatorial position is 72°.
• Molecule BeF₂ has linear shape. Bond angle of BeF₂ is 180°.
• Molecule SF₆ has octahedral shape with 90° bond angle on equatorial position and 180° bond angle on axial position.

Therefore, two molecule XeF₄ and SF₆ have identical bond angles.