Question 1

Consider the Lewis structures for the compound SO₃ and the polyatomic ions SO₃²^- and SO₄²^-.Which of these would exist as a set of resonance structures?

Accepted Answer

The answer of Consider the Lewis structures for the compound...

Question 2

Which of the following compounds would have a linear molecular geometry? 1.N₂ 2.H₂S 3.CO₂

Accepted Answer

1 and 3 (CO and NO) have linear molecular geometries because they both have a central atom with two regions of electron density (a double bond and a lone pair for NO, and two double bonds for CO), leading to a linear shape according to VSEPR theory. H2S has a bent molecular geometry due to two bonding pairs and two lone pairs on the sulfur atom.

Question 3

What is the angle between electron groups in the trigonal planar electron geometry?

Accepted Answer

Trigonal planar electron geometry has three electron groups arranged in a flat triangle. The angle between them is 120°.

Question 4

What is the molecular geometry of ozone,O₃?

Accepted Answer

According to the Lewis structure, ozone has three electron pairs around the central atom (two lone pairs and one bonding pair). This results in a bent molecular geometry.

Question 5

What is the molecular geometry of PH₃?

Accepted Answer

The molecular formula PH₃ seems to be a typographical error or a non-standard representation. However, assuming the question intends to ask about the molecular geometry of a compound with phosphorus (P) and hydrogen (H) bonded together, with possibly sulfur (S) involved, a common molecule that fits a simple composition involving these elements is PH3 (phosphine). The geometry of PH3 is trigonal pyramidal, similar to ammonia (NH3), due to the presence of a lone pair on the phosphorus atom.

Question 6

What is the electron geometry if you have 4 electron groups around the center atom?

Accepted Answer

If there are 4 electron groups around the center atom, the electron geometry would be tetrahedral, as there are 4 regions of electron density.

Question 7

What is the molecular geometry of NH₄⁺?

Accepted Answer

The presence of one sulfur atom and one phosphorus atom along with one central nitrogen atom and six peripheral atoms suggests the molecule has a tetrahedral geometry. The molecule also does not have any lone pairs on the central nitrogen atom, further confirming the tetrahedral geometry.

Question 8

What is the molecular geometry of SCl₂?

Accepted Answer

The molecular formula SCl2 (sulfur dichloride) suggests a central sulfur atom bonded to two chlorine atoms with two lone pairs on the sulfur, leading to a bent molecular geometry according to VSEPR theory.

Question 9

What is the molecular geometry of carbon dioxide,CO₂?

Accepted Answer

Carbon dioxide has a linear molecular geometry, as the central carbon atom is surrounded by two oxygen atoms that are located on opposite sides of the carbon atom, creating a straight linear shape.

Question 10

What is the molecular geometry of CCl₄?

Accepted Answer

The answer of What is the molecular geometry of CCl₄? ...

Question 11

Which of the following is considered a single electron group?

Accepted Answer

The answer of Which of the following is considered a...

Question 12

What is the angle between electron groups in the tetrahedral geometry?

Accepted Answer

In tetrahedral geometry, there are four electron groups around the central atom, which repel each other equally. This results in a bond angle of 109.5° between each of the electron groups.

Question 13

What is the molecular geometry if you have 4 single bonds around the central atom?

Accepted Answer

If there are 4 single bonds around the central atom, it is a tetrahedral molecular geometry.

Question 14

What is the molecular geometry of SiH₄?

Accepted Answer

Based on the molecular formula, SiH₄, we can determine that it has one silicon atom (Si), one sulfur atom (S), two boron atoms (B), and one unknown atom (U). Since there are five regions of electron density around the central Si atom, the molecular geometry will be tetrahedral.

Question 15

What is the molecular geometry if you have 3 single bonds and 1 lone pair around the central atom?

Accepted Answer

The presence of a lone pair suggests that the molecule is not symmetrical, ruling out linear and tetrahedral geometries. The molecule has 3 bonds around the central atom, suggesting trigonal planar geometry. However, the presence of a lone pair causes the molecule to have a bent shape, leading to a trigonal pyramidal geometry.

Question 16

What is the angle between electron groups in the linear electron geometry?

Accepted Answer

The linear electron geometry has two electron groups arranged in a straight line, so the angle between them is 180°.

Question 17

What is the molecular geometry if you have a double bond,a single bond and 1 lone pair around the central atom?

Accepted Answer

The presence of a double bond, a single bond, and one lone pair around the central atom typically results in a bent molecular geometry due to the repulsion between the electron pairs.

Question 18

What is the electron geometry if you have 2 electron groups around the center atom?

Accepted Answer

The electron geometry is determined by the number of electron groups around the central atom. With 2 electron groups, the geometry is linear.

Question 19

What is the electron geometry if you have 3 electron groups around the center atom?

Accepted Answer

If there are 3 electron groups around the central atom, the electron geometry is trigonal planar.

Question 20

Which of the following compounds have resonance structures?

Accepted Answer

The answer of Which of the following compounds have resonance...

Quiz 10: Chemical Bonding

Consider the Lewis structures for the compound SO3 and the polyatomic ions SO32- and SO42-.Which of these would exist as a set of resonance structures?

Which of the following compounds would have a linear molecular geometry? 1.N2 2.H2S 3.CO2