12. Molecular Shapes &amp; Valence Bond Theory

Electron geometry and bond angles - Real Chemistry

Electron geometry and bond angles - Real Chemistry

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Practice this topic

Multiple Choice

Determine the electron geometry for the carbon disulfide molecule, CS₂.

A. Linear

B. Bent

C. Trigonal planar

D. Tetrahedral

652

rank

Multiple Choice

Determine the number of electron groups for the following cation:AsBr₂⁺.

A. 2

B. 3

C. 4

D. 1

Draw and determine the electron geometry for the following molecule:TeBr₄

Multiple Choice

Determine the electron geometry of the nitrogen atom within methylamine, CH₃NH₂.

A. Linear

B. Trigonal Pyramidal

C. Tetrahedral

D. Trigonal Planar

681

rank

(a) An AB2 molecule is linear. How many nonbonding electron pairs are around the A atom from this information?

672

How does a trigonal pyramid differ from a tetrahedron so far as molecular geometry is concerned?

349

(b) An AB4 molecule has two lone pairs of electrons on the A atom (in addition to the four B atoms). What is the electron-domain geometry around the A atom?

1023

Would you expect the nonbonding electron-pair domain in NCl3 to be greater or smaller in size than the corresponding one in PCl3?

362

How many electron domains are surrounding the central atoms which adopt the following geometries? (d) trigonal bipyramidal.

532

A molecule with the formula AB3 has a trigonal pyramidal geometry. How many electron groups are on the central atom (A)?

2563

A molecule with the formula AB3 has a trigonal planar geometry. How many electron groups are on the central atom?

720

How many charge clouds are there around the central atom in molecules that have the following geometry? (a) Tetrahedral (b) Octahedral (c) Bent (d) Linear (e) Square pyramidal (f) Trigonal pyramidal

585

What is the difference in spatial distribution between electrons in a p bond and electrons in a s bond?

526

An AB2 molecule is described as having a tetrahedral geometry. (a) How many nonbonding domains are on atom A?

2335

Consider the following XF4 ions: PF4-, BrF4-, ClF4+, and AlF4-. (c) Which of the ions will have an octahedral electron-domain geometry?

883

Consider the molecule PF4Cl. (d) Would you expect the molecule to distort from its ideal electron-domain geometry? If so, how would it distort?

510

An AB5 molecule adopts the geometry shown here. (c) Suppose the B atoms are halogen atoms. Of which group in the periodic table is atom A a member: (i) Group 15, (ii) Group 16, (iii) Group 17, (iv) Group 18, or (v) More information is needed?

360

a) Predict the electron-domain geometry around the central S atom in SF2, SF4, and SF6.

470

A series of anions is shown below: The anion on the far right is called 'BARF' by chemists, as its common abbreviation sounds similar to this word. (c) Which, if any, of these anions has an expanded octet around its central atom?

155

A series of anions is shown below:

The anion on the far right is called 'BARF' by chemists, as its common abbreviation sounds similar to this word. (b) What is the electron-domain geometry around the central B in BARF?

232

At least two different numbers of electron groups can result in a linear molecule. What are they?

How does adding a lone pair affect the position of existing atoms and lone pairs?

Draw the Lewis structure of HCN and then determine its electron domain and molecular geometries.

For each bond, select the arrow that indicates the direction of bond polarity.

In the PF₅ molecule, what is the geometry of the bond dipole for one PF bond?

Molecule with 3 atoms bonded to a central atom with 2 unshared pairs of electrons, such as CIF₃

What is the electron geometry around the phosphorus atom in phosphorus pentachloride, PCl₅?