The selenium hexafluoride molecule is nonpolar and contains no lone (unshared) electron pairs on the selenium atom. What are all of the possible F-Se-F bond angles? ° ° 3.90° and 180 ° 4.90°, 120°, and 180° °

A hypothetical AB 3 molecule has two (2) lone (unshared) electron pairs on A. The hybridization at A is _____ sp 2.sp 2 3.sp 3 4.sp 3 d 5.sp 3 d 2

The nitrite ion, NO 2-, is known to be angular. The nitrogen atom is the central atom and the oxygen atoms are equidistant from it. On the basis of these facts, which of the following conclusions may be drawn concerning this ion? Choose the answer that includes all the correct conclusions, and no others. I. It can be represented by resonance formulas. II. The dipoles associated with each nitrogen-oxygen bond are equal in magnitude. III. The dipoles associated with the nitrogen-oxygen bonds are opposite in direction. IV. The nitrogen atom is sp hybridized. V. The nitrite ion makes no contribution to the polarity of compounds in which it is contained II and III 2.I and II 3.I, III, and V 4.I, III, and IV 5.II, III, and IV

Which of the following statements concerning BeCl 2 is false? BeCl 2 is a linear molecule. 2.The hybridization of the central Be atom is sp. 3.The electronegativity difference between Be and Cl is so large (1.5 units) that BeCl 2 is an ionic compound. 4.Because the bond angle is 180° the two bond dipoles cancel to give a nonpolar molecule. 5.The Be atom in BeCl 2 does not satisfy the octet rule.

The silicon atom in the SiH 4 molecule is _____ hybridized and the H-Si-H bond angles are _____ sp 2, 120° 2. sp 2, 109.5° 3. sp 3, 109.5° 4. sp 3, 120° 5. sp 2, 90°

Consider the bonding in the SiH 4 molecule. Which response includes all the following statements that are true, and no false statements? I. SiH 4 is a polar molecule. II. The H-Si-H bond angles are 120°. III. The SiH 4 molecule is tetrahedral. IV. The hybridization of Si is sp I and III 2.II and IV 3.III 4.I, II, and IV 5.I and II

Which statement is false? Lone pairs of electrons repel each other more strongly than bonding pairs repel each other. 2.Lone pairs of electrons repel each other more strongly than they repel bonding pairs. 3.Lone pairs of electrons are considered a part of the electronic geometry about a central atom. 4.Lone pairs of electrons have no effect on the molecular geometry about an atom. 5.Lone pairs of electrons are not considered a part of the molecular geometry about a central atom.

Which response contains all the characteristics listed that should apply to phosphorus trichloride, PCl 3, and no other characteristics? I. trigonal planar II. polar bonds III. sp 2 hybridized at P IV. polar molecule V. one unshared pair of electrons on P I, IV, and V 2.II, III, and IV 3.I, II, and IV 4.II, IV, and V 5.none of these

Why are hybrid orbitals not proposed in describing the bonding in H 2 S, H 2 Se and H 2 Te? They are all linear molecules. 2.Their bond angles are close to the 90° angle between two unhybridized p orbitals. 3.All three of these molecules are nonpolar. 4.They have d orbitals in their valence shells. 5.They each have two lone pairs of electrons on the central atom.

Draw the dot formula for SF 4. What is the hybridization at S? sp 2. sp 2 3. sp 3 4. sp 3 d 5. sp 3 d 2

The F-S-F bond angles in SF 6 are _____ ° 2.120° 3.90° and 120° 4.45° and 90° 5.90° and 180°

Which of the following species does not have octahedral electronic geometry? SeF 6 2.BrF 5 3.XeF 4 4.PF 6 5.SF 4

Which molecule is incorrectly matched with the molecular geometry? Molecule / Molecular Geometry TeF 6 / octahedral 2.NH 3 / tetrahedral 3.AsF 5 / trigonal bipyramidal 4.SiF 4 / tetrahedral 5.H 2 O / angular

Which molecule or polyatomic ion is incorrectly matched with the molecular (or ionic) geometry? Ion / Molecular Geometry SiCl 6 2- / trigonal bipyramidal 2.PH 4 + / tetrahedral 3.ClO 2 - / angular 4.NH 4 + / tetrahedral 5.SO 4 2- / tetrahedral

Which species is incorrectly matched with the hybridization at the central atom? Compound / Hybridization at Central Atom BF 3 / sp 2 2.SnCl 4 / sp 3 3.AsF 5 / sp 3 d 2 4.H 2 O / sp 3 5.BeCl 2 / sp

Which one of the following molecules is polar? SiH 4 2.SF 6 3.H 2 S 4.PCl 5 5.SiF 4

Which response contains all of the polar molecules below and no nonpolar molecules? I. BF 3 II. PF 3 III. H 2 O IV. PF 5 V. TeF 6 (Te is in Group VIA) I, II, and IV 2.II, III, and V 3.III 4.II and III 5.another one or another combination

Which compound consists of nonpolar molecules? (It may help to draw dot formulas.) H 2 S 2.PH 3 3.AsCl 3 4.SiH 4 5.SF 4