We are open Saturday and Sunday!

Call Now to Set Up Tutoring:

(888) 888-0446

GRE Subject Test: Chemistry : Electron Configuration

Study concepts, example questions & explanations for GRE Subject Test: Chemistry

Create An Account

All GRE Subject Test: Chemistry Resources

1 Diagnostic Test 152 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

← Previous 1 2 Next →

Example Question #42 : Nuclear Chemistry And Electrons

An electron in which of the following orbitals is closest to the nucleus?

Possible Answers:

Correct answer:

Explanation:

Nuclear orbitals will always fill from the innermost to the outermost subshells. Using the (n+l) rule, we can approximate the order in which these orbitals will fill. Because electrons fill starting with the centermost orbitals, the electron that is closest to the nucleus will belong to the orbital that fills first.

corresponds to the principle quantum number, the first number in the given orbital location. is the azimuthal quantum number, and dictates the shape of the orbital.

$s\rightarrow l=0$ $p\rightarrow l=1$ $d\rightarrow l=2$ $f\rightarrow l=3$

5s and 3d produce the same number from the (n+l) equation, but in the event of a tie we always pick the orbital with the lowest letter (s < p < d < f). The innermost orbital will be 5s.

$5s\rightarrow (5+0)=5$

$3d\rightarrow (3+2)=5$

$4f\rightarrow (4+3)=7$

$6p\rightarrow (6+1)=7$

Report an Error

Example Question #11 : Electron Configuration

What is the electron configuration of Fe⁺?

Possible Answers:

[Ar]4s^13d^7

[Ar]4s^13d^6

[Ar]4s^23d^5

[Ar]4s^23d^7

Correct answer:

[Ar]4s^13d^6

Explanation:

When an element loses an electron it is generally taken away from the highest electron shell. The electron configuration of iron (Fe) is [Ar]4s^23d^6 . The 4s orbital is farther away from the nucleus than the 3d orbital, therefore the electron configuration of Fe⁺ will be [Ar]4s^13d^6 .

Report an Error

Example Question #11 : Electron Configuration

Which of the following is the correct electronic configuration for vanadium?

Possible Answers:

[Ar]3d³4s²

[Ar]4s²4p³

[Ar]3d²4s²

[Ar]3d⁴4s¹

Correct answer:

[Ar]3d³4s²

Explanation:

When determining electronic configuration, the answer is made much easier by starting with the next smallest noble gas in brackets. As a result, [Ar] is an appropriate way to incorporate every previous electron before argon.

After argon, vanadium has five other electrons to distribute, and because vanadium is a transitional element, it will fill its 3d subshells before filling the 4p subshells. The 4s subshell is filled first, and the last three electrons are placed into the 3d subshells.

[Ar]3d³4s²

Report an Error

Example Question #14 : Electron Configuration

Which of the following is the correct notation for a sodium ion?

Possible Answers:

$\small 1s^{2}2s^{2}2p^{6}3s^{1}$

$\small 1s^{2}2s^{2}2p^{6}$

Correct answer:

$\small 1s^{2}2s^{2}2p^{6}$

Explanation:

A neutral atom of sodium would contain eleven electrons to balance out the charge of the eleven protons in the nucleus. We are asked, however, for the configuration of a sodium ion. Sodium is an alkali metal, meaning that it will ionize by losing only one electron, gaining a charge of $\small +1$ . By losing one electron, sodium drops from having eleven electrons to ten. We will need to select the answer that shows an electron removed form the outermost shell.

Neutral sodium: 1s^22s^22p^63s^1

Sodium ion: 1s^22s^22p^6

Report an Error

← Previous 1 2 Next →

View Tutors

Gregory
Certified Tutor

Pennsylvania State University-Main Campus, Bachelor of Science, Chemical Engineering. Carnegie Mellon University, Doctor of P...

View Tutors

Benjamin
Certified Tutor

Johns Hopkins University, Bachelor in Arts, Chemistry.

View Tutors

Yongmao
Certified Tutor

Nankai University, Bachelor of Science, Chemistry. Washington University in St Louis, Doctor of Philosophy, Organic Chemistry.

All GRE Subject Test: Chemistry Resources

1 Diagnostic Test 152 Practice Tests Question of the Day Flashcards Learn by Concept

Popular Subjects

SSAT Tutors in Denver, Calculus Tutors in Philadelphia, Statistics Tutors in Washington DC, Physics Tutors in Dallas Fort Worth, ISEE Tutors in Boston, Algebra Tutors in Chicago, Math Tutors in Chicago, MCAT Tutors in Philadelphia, Chemistry Tutors in Philadelphia, Chemistry Tutors in San Francisco-Bay Area

Popular Courses & Classes

LSAT Courses & Classes in Miami, GMAT Courses & Classes in Atlanta, Spanish Courses & Classes in Phoenix, LSAT Courses & Classes in Washington DC, SAT Courses & Classes in San Francisco-Bay Area, Spanish Courses & Classes in Los Angeles, GMAT Courses & Classes in New York City, ACT Courses & Classes in Phoenix, ISEE Courses & Classes in Philadelphia, GMAT Courses & Classes in Phoenix

Popular Test Prep

ISEE Test Prep in Atlanta, MCAT Test Prep in Dallas Fort Worth, ACT Test Prep in Miami, GMAT Test Prep in Miami, GMAT Test Prep in Los Angeles, LSAT Test Prep in Miami, MCAT Test Prep in Chicago, GRE Test Prep in Seattle, GMAT Test Prep in Atlanta, ACT Test Prep in Phoenix

DMCA Complaint

If you believe that content available by means of the Website (as defined in our Terms of Service) infringes one or more of your copyrights, please notify us by providing a written notice (“Infringement Notice”) containing the information described below to the designated agent listed below. If Varsity Tutors takes action in response to an Infringement Notice, it will make a good faith attempt to contact the party that made such content available by means of the most recent email address, if any, provided by such party to Varsity Tutors.

Your Infringement Notice may be forwarded to the party that made the content available or to third parties such as ChillingEffects.org.

Please be advised that you will be liable for damages (including costs and attorneys’ fees) if you materially misrepresent that a product or activity is infringing your copyrights. Thus, if you are not sure content located on or linked-to by the Website infringes your copyright, you should consider first contacting an attorney.

Please follow these steps to file a notice:

You must include the following:

A physical or electronic signature of the copyright owner or a person authorized to act on their behalf; An identification of the copyright claimed to have been infringed; A description of the nature and exact location of the content that you claim to infringe your copyright, in \ sufficient detail to permit Varsity Tutors to find and positively identify that content; for example we require a link to the specific question (not just the name of the question) that contains the content and a description of which specific portion of the question – an image, a link, the text, etc – your complaint refers to; Your name, address, telephone number and email address; and A statement by you: (a) that you believe in good faith that the use of the content that you claim to infringe your copyright is not authorized by law, or by the copyright owner or such owner’s agent; (b) that all of the information contained in your Infringement Notice is accurate, and (c) under penalty of perjury, that you are either the copyright owner or a person authorized to act on their behalf.

Send your complaint to our designated agent at:

Charles Cohn Varsity Tutors LLC
101 S. Hanley Rd, Suite 300
St. Louis, MO 63105

Or fill out the form below:

Do not fill in this field

Contact Information

* Full legal name

Company name

* Phone number

* Email address

Address

* Address1

Address2

* City

* State

* Zipcode

* Country

Complaint Details

* URL of copyrighted work (where your original material is located)

* Please describe the copyrighted work so that it may be easily identified

I am the owner, or an agent authorized to act on behalf of the owner of an exclusive right that is allegedly infringed.

I have a good faith belief that the use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law.

This notification is accurate.

I acknowledge that there may be adverse legal consequences for making false or bad faith allegations of copyright infringement by using this process.

* Signature (your digital signature is legally binding)

HIGH SCHOOL

GRADUATE SCHOOL

K-8

Search 50+ Tests

math tutoring

science tutoring

foreign languages

elementary tutoring

other

Search 350+ Subjects

GRE Subject Test: Chemistry : Electron Configuration

Study concepts, example questions & explanations for GRE Subject Test: Chemistry

All GRE Subject Test: Chemistry Resources

Example Questions

Example Question #42 : Nuclear Chemistry And Electrons

Example Question #11 : Electron Configuration

Example Question #11 : Electron Configuration

Example Question #14 : Electron Configuration

All GRE Subject Test: Chemistry Resources

Report an issue with this question

DMCA Complaint

Contact Information

Address

Complaint Details

Email address:
Your name:
Feedback: