Zadanie 10
Which molecule has a central atom with an expanded octet? A. ClF3 B. NF3 C. CF4 D. BeCl2
Expanded octets and shapes with five or six domains
Draw Lewis formulas for species with expanded octets such as PCl5, SF6, SF4, ClF3, XeF4 and I3-, and use VSEPR to deduce their electron domain geometry, molecular geometry (trigonal bipyramidal, octahedral, see-saw, T-shaped, square planar) and bond angles.
Tę umiejętność sprawdza 21 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 21 Otwórz w wyszukiwarce z filtrami
Zadanie 21
What are the electron domain geometry and the molecular geometry of sulfur hexafluoride, SF6? In each option the electron domain geometry is given first and the molecular geometry second. A. Octahedral, octahedral B. Octahedral, square planar C.…
Zadanie 9
What are the electron domain and molecular geometries of ClF3? In each option the electron domain geometry is given first and the molecular geometry second. A. trigonal bipyramidal, trigonal planar B. trigonal bipyramidal, T-shaped C. trigonal planar,…
Zadanie 1c
Sulfur forms a dichloride, SCl2, and a hexafluoride, SF6. (i) Deduce the Lewis formula of SCl2. (ii) Deduce the molecular geometry of SCl2 and of SF6. (iii) Suggest a value for the bond angle in SCl2.
Zadanie 7
What are the electron domain geometry and the molecular geometry of the BrF4− ion? A. Electron domain geometry: tetrahedral; molecular geometry: tetrahedral B. Electron domain geometry: trigonal bipyramidal; molecular geometry: seesaw C. Electron domain…
Zadanie 10
Which Lewis formula of the sulfate ion, SO42−, is preferred on the basis of formal charges? A. Formula A B. Formula B C. Formula C D. Formula D
- Materiał graficzny
Zadanie 8
What is the molecular geometry of PCl3F2? A. trigonal bipyramidal B. trigonal planar C. square pyramidal D. pentagonal
Zadanie 12
What is the molecular geometry of XeF4? A. tetrahedral B. see-saw C. octahedral D. square planar
Zadanie 15
Which molecule is non-polar? A. SF4 B. ClF3 C. BrF5 D. XeF4
Zadanie 4a
Sulfur dioxide, SO2, can be represented by more than one Lewis (electron dot) structure. (i) Sketch two different Lewis (electron dot) structures of SO2, one in which all atoms obey the octet rule and one in which sulfur does not. (ii) State the…
Zadanie 5a
(i) Draw one Lewis (electron dot) structure of the sulfate ion. (ii) Calculate the percentage of oxygen present in the double salt. (iii) Determine the empirical formula of the double salt. Use section 7 of the data booklet. (iv) The molar mass of the…
Zadanie 12
Which is the preferred Lewis structure of the phosphate ion, PO43−, based on formal charge? A. Structure A B. Structure B C. Structure C D. Structure D
- Materiał graficzny
Zadanie 11
Between the molecules of which substance do only London (dispersion) forces act? A. XeF4 B. SF4 C. ClF3 D. IF5
Zadanie 12
Which Lewis structure of SO2Cl2 is preferred on the basis of formal charges? A. Diagram A B. Diagram B C. Diagram C D. Diagram D
- Materiał graficzny
Zadanie 12
Which Lewis formula of the perchlorate ion, ClO4−, is preferred on the basis of the lowest formal charges? A. Four Cl–O single bonds B. One Cl=O double bond and three Cl–O single bonds C. Two Cl=O double bonds and two Cl–O single bonds D. Three Cl=O…
Zadanie 12
What is the molecular geometry of ClF3? A. Trigonal planar B. Trigonal pyramidal C. Trigonal bipyramidal D. T-shaped
Zadanie 13
What are the electron domain geometry and the molecular geometry of the ClF3 molecule? A. Electron domain geometry: octahedral; molecular geometry: trigonal planar B. Electron domain geometry: octahedral; molecular geometry: T-shaped C. Electron domain…
Zadanie 5c
Deduce the Lewis (electron dot) structure of sulfur trioxide.
Zadanie 5f
PF3Cl2 can form isomers, some of which are polar and one of which is non-polar. Deduce the three-dimensional arrangement of one non-polar isomer and of one polar isomer of PF3Cl2 by stating the positions, axial or equatorial, of the two chlorine…
Zadanie 10
Which elements are capable of forming molecules or ions with an expanded octet? I. Chlorine II. Carbon III. Sulfur A. I and II only B. I and III only C. II and III only D. I, II and III
Zadanie 11
Which molecule has a tetrahedral molecular geometry? A. PCl5 B. ClF3 C. SeF4 D. SO2F2