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 $$\mathrm{BF_3$}$$?

Accepted Answer

None

Question 4

Which of the following statements is true regarding electronegativity?

Accepted Answer

Nitrogen is more electronegative than arsenic.

Question 5

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

Accepted Answer

Less than $$109.5^\circ$$

Question 6

Which of the following is the correct name for the ion $$\mathrm{SO_4$^{2-}}$$?

Accepted Answer

Sulfate

Question 7

Which of the following species is best described by writing 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

+1

Question 9

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

Accepted Answer

6

Question 10

When group 2 (2A) elements form ions, what is their typical charge?

Accepted Answer

+2

Question 11

Which of the following best describes the polarity of ammonia ($$\mathrm{NH_3$}$$)?

Accepted Answer

Polar

Question 12

What is the correct chemical formula for iron(II) nitrate?

Accepted Answer

$$\mathrm{Fe(NO_3$)_2}$$

Question 13

Which of the following molecules is nonpolar due to its geometry, despite having polar bonds?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 14

A patient is exposed to a compound containing the sulfate ion. Which formula represents this ion?

Accepted Answer

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

Question 15

Which of the following ions is isoelectronic with neon ($$\mathrm{Ne}$$)?

Accepted Answer

$$\mathrm{F^-}$$

Question 16

Which of the following best explains why $$\mathrm{BF_3$} is $$nonpolar?

Accepted Answer

The molecule is trigonal planar and the bond dipoles cancel out.

Question 17

Which of the following molecules has a tetrahedral electron geometry but a bent molecular shape?

Accepted Answer

$$\mathrm{H_2O}$$

Question 18

A sample contains $$\mathrm{SO_3$}$$ molecules. Which statement about its resonance structures is correct?

Accepted Answer

All three resonance structures are equivalent.

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 ions is formed when a group 2 (2A) element reacts with a nonmetal?

Accepted Answer

$$\mathrm{Ca$$^{2+}$$}$$

Exam 3 Practice Problems – Step-by-Step Guidance

스터디 가이드 - 연습 문제