Question
Asked Oct 14, 2019
21 views

Which does not have a noble gas configuration?

A. Sc3+

B. Ar

C. O2-

D. K

I answered A.Sc3+ which ended up being wrong.  I need to know how to find the answer.  And apparently I don't know what a noble gas configuration is if I got the answer wrong.

check_circle

Expert Answer

Step 1

An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles are arranged in a certain way in the atom and provide electrical neutrality to the molecule. Electrons are placed in different energy levels of an atom.

Step 2

The energy levels of electrons in an atom can be explained with the help of different quantum numbers.

The distribution of electrons in an atom can be shown with the help of electronic configuration. The electronic configuration of an element represents the number of electrons in different energy levels of an element. The energy levels must be arranged in increasing order of their energy and can only accommodate a certain number of electrons.

Step 3

The Noble gases are the elements of group-18 with ns2, np6 configuration. The ions or atoms which have this...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Atomic structure

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: which of the following is the correct structure of 2-methyl-1-butane

A: The compound 2- methyl- 1-butene contains a parent butane chain with a double bond between first and...

question_answer

Q: The chemistry of nitrogen oxides is very versatile. Given the following reactions and their standard...

A: The overall chemical equation is represented as,

question_answer

Q: A sample of carbon tetrachloride has a mass of 51.6 grams how many moles are contained in the sample

A: Number of moles of a substance can be determined using its mass and molar mass using the equation be...

question_answer

Q: Employ the method of dimensional analysis to convert 1 cubic yard to tonnes of water. Assume a densi...

A: Using dimensional analysis method the given 1 cubic yard is converted into to tonnes of water as fol...

question_answer

Q: 13. Write a balanced chemical reaction for each of the following reactions:a. Nitrogen gas combines ...

A: PART A:Nitrogen gas combines with hydrogen to form ammonia gas:

question_answer

Q: predict the major product of the reaction sequence below

A: The given reaction is an elimination reaction.When the base is associated with solvent it will becom...

question_answer

Q: A mouse is placed in a sealed chamber with air at 750.0 torr. This chamber is equipped with enough s...

A: First, the change in pressure is determined,Pressure = 750 torr – 718.7 torr = 31.3 torr.Pressure = ...

question_answer

Q: what is the molar mass and % sulfate of the equations in the chart, and what is the answer / how do ...

A: Molar mass of the compound:

question_answer

Q: Hydrochloric acid can be prepared by the following reaction:  NaCl(s)+ H2SO4(aq)--> HCl(g) + Na2S...

A: Solution stoichiometry involves the calculation of concentration of solutions in the given condition...