Question 1

Which quantum number determines the 3D shape of an atomic orbital, and what are the possible values for a principal quantum number $$n = 3$$?

Accepted Answer

The azimuthal quantum number $$l$$, with possible values $$0, 1, 2$$

Question 2

Refer to the first image. Which orbital type is represented by the green shape, and how many orientations does it have?

Accepted Answer

d orbital; 5 orientations

Question 3

Based on the second image, which block of the periodic table contains the elements with their last electron entering a d orbital?

Accepted Answer

The yellow block (transition metals)

Question 4

According to the third image, which subshell is filled immediately after the $$4s$$ subshell?

Accepted Answer

$$3d$$

Question 5

Which of the following best describes the trend in atomic radius across a period in the periodic table (see fourth image)?

Accepted Answer

Atomic radius decreases from left to right

Question 6

In the hydrolysis of NaCl (see fifth image), what type of bond is broken when NaCl dissolves in water?

Accepted Answer

Ionic bond

Question 7

Refer to the sixth image. Which plot corresponds to a first-order reaction, and what is the integrated rate law for a first-order reaction?

Accepted Answer

The middle plot ($$\ln [A] vs. $$time); $$[A] = [A]_0 e$$^{-kt}$$

Question 8

In the phase diagram shown in the seventh image, what is the significance of the triple point?

Accepted Answer

It is the temperature and pressure at which all three phases (solid, liquid, gas) coexist in equilibrium

Question 9

Based on the eighth image, which group contains the halogens?

Accepted Answer

Group 17 (F, Cl, Br, I)

Question 10

Refer to the ninth image. In a galvanic cell, which electrode is the site of oxidation and what is its sign?

Accepted Answer

Anode; negative

Question 11

In the tenth image, which ion migrates toward the anode during the electrolysis of aqueous NaCl?

Accepted Answer

Cl$$^-$$

Question 12

The structure in the eleventh image is characteristic of which functional group?

Accepted Answer

Aldehyde

Question 13

The structure in the twelfth image is characteristic of which functional group?

Accepted Answer

Carboxylic acid

Question 14

According to the thirteenth image, what is the molecular formula for dodecane?

Accepted Answer

$$C_{12}H$$_{26}$$

Question 15

The fourteenth image shows a Newman projection. What is the conformation depicted?

Accepted Answer

Eclipsed

Question 16

The fifteenth image shows a Newman projection. What is the conformation depicted?

Accepted Answer

Staggered gauche

Question 17

The sixteenth image shows a Newman projection. What is the conformation depicted?

Accepted Answer

Staggered anti

Question 18

The seventeenth image shows two molecules. What is the relationship between them?

Accepted Answer

Enantiomers

Question 19

The eighteenth image shows two molecules. What is the relationship between them?

Accepted Answer

Diastereomers

Question 20

The nineteenth image shows two Fischer projections. What is the relationship between these two molecules?

Accepted Answer

They are identical (conformational isomers)

Atomic Structure and Quantum Numbers: Foundations for Biochemistry

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