Question 1

Which atomic orbital is spherical in shape?

Accepted Answer

s orbital

Question 2

According to the Aufbau Principle, which orbital is filled immediately after the $3p$ orbital?

Accepted Answer

$4s$

Question 3

How many electrons can occupy the third shell of an atom?

Accepted Answer

18

Question 4

Which of the following molecules has a tetrahedral geometry due to $sp^3$ hybridization?

Accepted Answer

Methane ($CH_4$)

Question 5

What is the electron configuration of oxygen ($Z=8$) using the Aufbau Principle?

Accepted Answer

$1s^2 2s^2 2p^4$

Question 6

Which statement best describes the role of valence electrons in covalent bond formation?

Accepted Answer

Valence electrons are shared between atoms to form covalent bonds.

Question 7

Which element is most likely to form three covalent bonds based on its electron-dot structure?

Accepted Answer

Nitrogen ($N$)

Question 8

What is the maximum number of electrons that can occupy a single $p$ orbital?

Accepted Answer

2

Question 9

Which of the following best describes the shape of a $p$ orbital?

Accepted Answer

Dumbbell-shaped

Question 10

In the context of molecular orbital theory, what is the primary difference between bonding and antibonding orbitals?

Accepted Answer

Bonding orbitals have lower energy and increased electron density between nuclei, while antibonding orbitals have higher energy and decreased electron density between nuclei.

Question 11

Which hybridization is present in the carbon atoms of ethylene ($C_2H_4$)?

Accepted Answer

$sp^2$

Question 12

Which of the following compounds contains a carbon atom with $sp$ hybridization?

Accepted Answer

Acetylene ($C_2H_2$)

Question 13

How many valence electrons does chlorine ($Cl$) have?

Accepted Answer

7

Question 14

Which of the following is a correct electron-dot (Lewis) structure for water ($H_2O$)?

Accepted Answer

O with two single bonds to H and two lone pairs

Question 15

Which of the following statements about the nucleus of an atom is correct?

Accepted Answer

The nucleus contains protons and neutrons and most of the atom's mass.

Question 16

Which of the following molecules is used as a real-world example in the study materials to illustrate organic structures?

Accepted Answer

Oxycodone

Question 17

What is the total number of bonds formed by carbon in a typical organic molecule?

Accepted Answer

Four

Question 18

Which orbital type is NOT present in the first electron shell of an atom?

Accepted Answer

$p$

Question 19

Which principle explains the order in which electrons fill atomic orbitals?

Accepted Answer

Aufbau Principle

Question 20

Which of the following is a correct representation of van't Hoff's tetrahedral carbon atom?

Accepted Answer

A carbon atom with four bonds arranged at 109.5° angles

Organic Chemistry I: Structure and Bonding (Chapter 1) - Mini-Textbook Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards