Question 1

What is the correct chemical formula for iron(III) bromate?

Accepted Answer

$$\mathrm{Fe($$BrO_3$$)_3}$$

Question 2

Which of the following best describes the VSEPR geometry of sulfur dichloride ($$\mathrm{$$SCl_2$$}$$)?

Accepted Answer

Bent

Question 3

How many lone pairs are present on the central atom in the Lewis structure of boron trifluoride ($$\mathrm{BF_3$}$$)?

Accepted Answer

None

Question 4

Which statement is correct regarding the electronegativity of nitrogen and arsenic?

Accepted Answer

Nitrogen is more electronegative than arsenic.

Question 5

What is the approximate bond angle in $$\mathrm{$$SCl_2$$}$$?

Accepted Answer

Less than $$109.5^\circ$$

Question 6

Which polyatomic ion is represented by $$\mathrm{SO_4$^{2-}}$$?

Accepted Answer

Sulfate

Question 7

Which of the following species is best described by three equivalent resonance structures?

Accepted Answer

$$\mathrm{SO_3$}$$

Question 8

Determine the formal charge of the least electronegative element in sulfur dioxide ($$\mathrm{SO_2$}).$$

Accepted Answer

0

Question 9

How many valence electrons do group 16 (6A) elements possess?

Accepted Answer

6

Question 10

Which of the following molecules has a linear geometry according to VSEPR theory?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 11

Which of the following ions contains a central atom with an expanded octet?

Accepted Answer

$$\mathrm{SO_4$^{2-}}$$

Question 12

Which of the following best explains why $$\mathrm{BF_3$} is $$considered electron-deficient?

Accepted Answer

The central atom has only 6 electrons in its valence shell.

Question 13

Which of the following molecules or ions has a trigonal pyramidal geometry?

Accepted Answer

$$\mathrm{NH_3$}$$

Question 14

A patient is exposed to high levels of $$\mathrm{CO_2$}$$, which is a linear molecule. What is the bond angle between the oxygen atoms in $$\mathrm{CO_2$}$$?

Accepted Answer

$$180^\circ$$

Question 15

Which of the following best describes the resonance in the sulfate ion ($$\mathrm{SO_4$^{2-}}$$)?

Accepted Answer

Four equivalent resonance structures

Question 16

Which of the following is the correct Lewis structure for $$\mathrm{SO_2$} in $$terms of lone pairs on the central atom?

Accepted Answer

One lone pair on sulfur

Question 17

Which of the following ions is isoelectronic with $$\mathrm{CO_3$^{2-}}$$?

Accepted Answer

$$\mathrm{NO_3$^-}$$

Question 18

A chemist needs to prepare a solution containing the chlorate ion. Which formula represents the chlorate ion?

Accepted Answer

$$\mathrm{$$ClO_3$$^-}$$

Question 19

Which of the following best describes the electron geometry and molecular geometry of $$\mathrm{NH_3$}$$?

Accepted Answer

Electron geometry: tetrahedral; Molecular geometry: trigonal pyramidal

Question 20

Which of the following best explains why $$\mathrm{SO_3$}$$ exhibits resonance?

Accepted Answer

The double bond can be placed between sulfur and any of the three oxygen atoms.

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