Question 1

Which of the following best describes the purpose of a condensed electron configuration?

Accepted Answer

To provide a faster way to write electron arrangements by starting at the last noble gas before the element.

Question 2

What is the condensed electron configuration for aluminum (Al)?

Accepted Answer

$[\mathrm{Ne}]\ 3s^2\ 3p^1$

Question 3

When writing a condensed electron configuration, what is the first step?

Accepted Answer

Find the element on the periodic table.

Question 4

For the element zinc (Zn), which noble gas is used in its condensed electron configuration?

Accepted Answer

$\mathrm{Ar}$

Question 5

Which of the following is the correct condensed electron configuration for zinc (Zn)?

Accepted Answer

$[\mathrm{Ar}]\ 4s^2\ 3d^{10}$

Question 6

Why do we use noble gas notation in condensed electron configurations?

Accepted Answer

To simplify the electron configuration by representing core electrons with a noble gas symbol.

Question 7

Which of the following elements would use $[\mathrm{Ne}]$ as the noble gas in its condensed electron configuration?

Accepted Answer

Phosphorus (P)

Question 8

If an atom has the condensed electron configuration $[\mathrm{Ar}]\ 4s^2\ 3d^6$, which element is it?

Accepted Answer

Iron (Fe)

Question 9

Which step is NOT part of the process for writing a condensed electron configuration?

Accepted Answer

Writing the full electron configuration from scratch.

Question 10

What is the electron configuration for the noble gas neon (Ne)?

Accepted Answer

$1s^2\ 2s^2\ 2p^6$

Question 11

Which of the following is a correct step when using condensed electron configuration for ions?

Accepted Answer

Adjust the electron count to reflect the charge of the ion before writing the configuration.

Question 12

If an element has the condensed electron configuration $[\mathrm{Ne}]\ 3s^2\ 3p^5$, what is the element?

Accepted Answer

Chlorine (Cl)

Question 13

Which orbital is filled immediately after $3p$ in the periodic table?

Accepted Answer

$4s$

Question 14

What is the condensed electron configuration for calcium (Ca)?

Accepted Answer

$[\mathrm{Ar}]\ 4s^2$

Question 15

Which of the following best explains why condensed electron configurations are useful in chemistry?

Accepted Answer

They allow chemists to quickly identify valence electrons and predict chemical behavior.

Condensed Electron Configuration and Periodic Table Application

Study Guide - Practice Questions