3. Chemical Foundations

Atomic Structure — Quiz

Test your understanding of atomic structure with 5 practice questions.

Practice Questions

Question 1

Consider an atom with the electron configuration $1s^2 2s^2 2p^6 3s^2 3p^3$. How many unpaired electrons does this atom have in its ground state?

Question 2

An atom has an atomic number of 24 and a mass number of 52. How many neutrons does this atom have?

Question 3

Which of the following electron configurations represents an atom of an element that is most likely to form a $2+$ ion by losing two electrons?

Question 4

Which of the following correctly describes the relationship between the atomic radius and the effective nuclear charge as you move across a period in the periodic table?

Question 5

Consider an ion with the electron configuration $1s^2 2s^2 2p^6 3s^2 3p^6$. If this ion has 18 electrons and 16 protons, what is the charge of the ion?