Chemistry 9701 · AS & A Level · The Periodic Table: chemical periodicity
The Periodic Table: chemical periodicity — practice question
The Valence Shell Electron Pair Repulsion theory (VSEPR) is a model that describes the repulsion between electron pairs, including lone pairs, and it can be used to work out the shapes of, and bond angles in, simple molecules.
(a)[3]
Use simple hydrogen-containing compounds to finish the table below. One example has already been given.
(b(i))
Draw a dot-and-cross diagram for the $\text{TeF}_6$ molecule, showing only outer electrons.
(b(ii))
What shape will the $\text{TeF}_6$ molecule have?
(b(iii))[3]
What F-Te-F bond angle is found in $\text{TeF}_6$?
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “3 bond pairs, 0 lone pairs, trigonal planar, for example $BH_3$” …