Question 1

Which compound from the following list is best described as predominantly ionic?

Accepted Answer

KBr

Question 2

Which bond would have the largest bond dipole moment?

Accepted Answer

$$\mathrm{Na-C}$$

Question 3

Of the atoms listed below, which is the least electronegative?

Accepted Answer

Al

Question 4

What is the correct chemical formula for dinitrogen tetroxide?

Accepted Answer

N$$_2O$_4$$

Question 5

Which is the correct name for Ca$$_3(PO$_4$$)$$_2$$?

Accepted Answer

Calcium phosphate

Question 6

How many equivalent resonance structures can be drawn for SO$$_4$$^{2-}$$?

Accepted Answer

4

Question 7

Which of the following species has a square planar molecular geometry?

Accepted Answer

XeF$$_4$$

Question 8

What molecular structure will be adopted by the compound BrF$$_5$$?

Accepted Answer

Square pyramidal

Question 9

Using VSEPR theory, which of the following best describes the smallest bond angle in ClF$$_3$$?

Accepted Answer

Less than 90$$^\circ$$

Question 10

Which of the following species has a central atom that uses three hybrid orbitals and one unhybridized p orbital in its bonding?

Accepted Answer

NO$$_2$$

Question 11

What is the hybridization of the central atom in BF$$_3$$?

Accepted Answer

sp$$^2$$

Question 12

A molecule contains a carbon atom with two double bonds and no lone pairs. What is the hybridization of this carbon atom?

Accepted Answer

sp

Question 13

Which of the following elements has the highest first ionization energy?

Accepted Answer

Ne

Question 14

Which of the following molecules is nonpolar despite having polar bonds?

Accepted Answer

CO$$_2$$

Question 15

Which of the following compounds would you expect to have the highest melting point?

Accepted Answer

NaCl

Question 16

Which of the following is the best Lewis structure for ClO$$_3^-$$?

Accepted Answer

Cl with one double bond and two single bonds to O, one O with a negative charge

Question 17

A patient is exposed to carbon monoxide (CO). Which property of CO makes it dangerous in the body?

Accepted Answer

CO binds strongly to hemoglobin, preventing oxygen transport

Question 18

Which of the following best describes the molecular geometry of ammonia (NH$$_3$$)?

Accepted Answer

Trigonal pyramidal

Question 19

Which element is most likely to form a cation with a +2 charge?

Accepted Answer

Mg

Question 20

Which of the following molecules contains both sigma ($$\sigma) $$and pi ($$\pi) $$bonds?

Accepted Answer

C$$_2H$_4$$

General Chemistry Midterm Study Guidance

Study Guide - Practice Questions