CHEMISTRY(LOOSELEAF W/CODE)- CUSTOM
CHEMISTRY(LOOSELEAF W/CODE)- CUSTOM
2nd Edition
ISBN: 9781260037920
Author: Burdge
Publisher: MCG
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Textbook Question
Chapter 6, Problem 1KSP

Key Skills Problems

What is the noble gas core for Mo?

( a ) Ar ( b ) Kr ( c ) Xe ( d ) Ne ( e ) Rn  

Expert Solution & Answer
Check Mark
Interpretation Introduction

Interpretation:

The noble gas core for Mo is to be identified.

Concept introduction:

The number of protons present in the nucleusof an atom is equal to its atomic number.

The number of electrons in aneutral atom of an element is equal to its atomic number. With the help of thenumber of electrons, the electronic configuration of a given element can be deduced.

General rules for writing electronic configuration

Electrons will reside in the available orbitals of lowest possible energy.

Each orbital can accommodate a maximum of two electrons.

Electrons will not pair in degenerate orbitals if an empty orbital is available.

Orbitals will fill in order of increasing energy 1s2s2p3s3p4s3d4p5s4d5p6s4f.

s-orbital can have 0–2 electrons.

p-orbital can have 0–6 electrons.

d-orbital can have 0–10 electrons.

f-orbital can have 0–14 electrons.

In the electronic configuration, the symbol of the noble gas in brackets represents the core electrons.

Answer to Problem 1KSP

Correct Answer: Option (b).

Explanation of Solution

Reasons for the correct option:

The atomic number of Mo is 42. The number of electrons present in a neutral atom of an element is equal to its atomic number. Thus, the number of electrons in Mo isalso 42. First, distribute two electrons in the 1s orbital, two electrons in the 2s orbital and six electrons in the 2p orbital. Further, distribute two electrons in the 3s orbital, six electrons in the 3p orbital, two electrons in the 4s orbital, ten electrons in the 3d orbital, six electrons in the 4p orbital, five electrons in the 4d orbital andone electron in the 5 s orbital.

Hence, the electronic configuration of Mo is as follows:

1s22s22p63s23p64s23d104p65s14d5

The inert gas that precedes molybdenum is krypton. So, the electron configuration for the core electrons is [Kr], which have atomic number 36. Thus, the number of electrons in [Kr] is 36.

Hence the electronic configuration of [Kr] is as follows 1s22s22p63s23p64s23d104p6

Hence, Option (b) is correct.

Reasons for the incorrect option:

Option (a) is incorrect because the total number of electrons in Mo is 42. So, an inert gas that precedes molybdenum is krypton and the symbol for Kryptonis [Kr]. So, it is a wrong answer.

Option (c) is incorrect because the total number of electrons in Mo is 42. So, an inert gas that precedes molybdenum is krypton and the symbol for Kryptonis [Kr]. So, it is a wrong answer.

Option (d) is incorrect because the total number of electrons in Mo is 42. So, an inert gas that precedes molybdenum is krypton and the symbol for Kryptonis [Kr]. So, it is a wrong answer.

Option (e) is incorrect because the total number of electrons in Mo is 42. So, an inert gas that precedes molybdenum is krypton and the symbol for Kryptonis [Kr]. So, it is a wrong answer.

Hence, options (a), (c), (d), and(e) are incorrect.

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Chapter 6 Solutions

CHEMISTRY(LOOSELEAF W/CODE)- CUSTOM

Ch. 6.2 - Prob. 1CPCh. 6.2 - Prob. 2CPCh. 6.2 - Prob. 3CPCh. 6.2 - Prob. 4CPCh. 6.3 - Prob. 1PPACh. 6.3 - Practice Problem BUILD (a) Calculate the...Ch. 6.3 - Prob. 1PPCCh. 6.3 - Prob. 1CPCh. 6.3 - Prob. 2CPCh. 6.3 - Prob. 3CPCh. 6.3 - Prob. 4CPCh. 6.4 - Prob. 1PPACh. 6.4 - Prob. 1PPBCh. 6.4 - Prob. 1PPCCh. 6.4 - Prob. 1CPCh. 6.4 - Prob. 2CPCh. 6.5 - Practice ProblemATTEMPT Calculate the de Broglie...Ch. 6.5 - Prob. 1PPBCh. 6.5 - Prob. 1PPCCh. 6.5 - What is the minimum uncertainty in the position of...Ch. 6.5 - Prob. 2CPCh. 6.6 - Prob. 1PPACh. 6.6 - Prob. 1PPBCh. 6.6 - Prob. 1PPCCh. 6.6 - Prob. 1CPCh. 6.6 - Prob. 2CPCh. 6.6 - Prob. 3CPCh. 6.6 - Prob. 4CPCh. 6.7 - Practice Problem ATTEMPT (a) What are the possible...Ch. 6.7 - Practice ProblemBUILD (a) What is the lowest...Ch. 6.7 - Practice Problem CONCEPTUALIZE Imagine a cobbler's...Ch. 6.7 - Prob. 1CPCh. 6.7 - Prob. 2CPCh. 6.7 - Prob. 3CPCh. 6.7 - Prob. 4CPCh. 6.8 - Prob. 1PPACh. 6.8 - Prob. 1PPBCh. 6.8 - Prob. 1PPCCh. 6.8 - Prob. 1CPCh. 6.8 - What element is represented by the following...Ch. 6.8 - Which orbital diagram is correct for the...Ch. 6.9 - Practice Problem ATTEMPT Write the electron...Ch. 6.9 - Prob. 1PPBCh. 6.9 - Prob. 1PPCCh. 6.9 - Prob. 1CPCh. 6.9 - Prob. 2CPCh. 6.9 - 6.9.3 Which of the following is a d-block element?...Ch. 6.9 - Prob. 4CPCh. 6.10 - Practice ProblemATTEMPT Without referring to...Ch. 6.10 - Practice ProblemBUILD Without referring to Figure...Ch. 6.10 - Practice ProblemCONCEPTUALIZE Consider again the...Ch. 6 - Key Skills Problems What is the noble gas core for...Ch. 6 - Which of the following electron configurations...Ch. 6 - What element is represented by the electron...Ch. 6 - What is the electron configuration of the Lu atom?...Ch. 6 - What is a wave? Using a diagram, define the...Ch. 6 - 6.2 What are the units for wavelength and...Ch. 6 - List the types of electromagnetic radiation having...Ch. 6 - 6.4 Give the high and low wavelength values that...Ch. 6 - (a) What is the wavelength (in nm) of light having...Ch. 6 - 6.6 (a) What is the frequency of light having a...Ch. 6 - 6.7 The SI unit of time is the second, which is...Ch. 6 - 6.8 How many minutes would it take a radio wave to...Ch. 6 - The average distance between Mars and Earth is...Ch. 6 - 6.10 Four waves represent light in four different...Ch. 6 - Briefly explain Planck’s quantum theory and...Ch. 6 - Prob. 12QPCh. 6 - 6.13 Explain what is meant by the photoelectric...Ch. 6 - 6.14 What are photons? What role did Einstein’s...Ch. 6 - A photon has a wavelength of 705 nm. Calculate the...Ch. 6 - The blue color of the sky results from the...Ch. 6 - 6.17 A photon has a frequency of . (a) Convert...Ch. 6 - What is the wavelength (in nm) of radiation that...Ch. 6 - When copper is bombarded with high energy...Ch. 6 - 6.20 A particular form of electromagnetic...Ch. 6 - The retina of a human eye can detect light when...Ch. 6 - The radioactive 60 Co isotope is used in nuclear...Ch. 6 - Photosynthesis makes use of visible light or bring...Ch. 6 - A red light was shined onto a metal sample and the...Ch. 6 - A photoelectric experiment was performed by...Ch. 6 - What are emission spectra? How do line spectra...Ch. 6 - What is an energy level? Explain the difference...Ch. 6 - Briefly describe Bohr's theory of the hydrogen...Ch. 6 - The first line of the Balmer series occurs at a...Ch. 6 - 6.30 Calculate the wavelength (in nm) of a photon...Ch. 6 - Calculate the frequency (Hz) and wavelength (nm)...Ch. 6 - Careful spectral analysis shows that the familiar...Ch. 6 - 6.33 An electron in the hydrogen atom makes a...Ch. 6 - 6.34 Consider the following energy levels of a...Ch. 6 - Some copper compounds emit green light when they...Ch. 6 - Is it possible for a fluorescent material to emit...Ch. 6 - Explain how astronomers are able to tell which...Ch. 6 - How does do Broglie's hypothesis account for the...Ch. 6 - 6.39 Why is Equation 6.9 meaningful only for...Ch. 6 - Does a baseball in flight possess wave properties?...Ch. 6 - 6.41 Thermal neutrons are neutrons that move at...Ch. 6 - Protons can be accelerated to speeds near that of...Ch. 6 - 6.43 What is the de Broglie wavelength (in cm) of...Ch. 6 - 6.44 What is the de Broglie wavelength (in nm)...Ch. 6 - Prob. 45QPCh. 6 - Prob. 46QPCh. 6 - Prob. 47QPCh. 6 - How is the concept of electron density used to...Ch. 6 - 6.49 What is an atomic orbital? How does an atomic...Ch. 6 - 6.50 Alveoli are tiny sacs of air in the lungs....Ch. 6 - 6.51 The speed of a thermal neutron (see Problem...Ch. 6 - 6.52 In the beginning of the twentieth century,...Ch. 6 - Prob. 53QPCh. 6 - Prob. 54QPCh. 6 - Which quantum number defines a shell? Which...Ch. 6 - Prob. 56QPCh. 6 - Prob. 57QPCh. 6 - Prob. 58QPCh. 6 - Prob. 59QPCh. 6 - Prob. 60QPCh. 6 - Prob. 61QPCh. 6 - 6.62 List the hydrogen orbitals in increasing...Ch. 6 - Prob. 63QPCh. 6 - Prob. 64QPCh. 6 - Prob. 65QPCh. 6 - Give the values of the four quantum numbers of an...Ch. 6 - Prob. 67QPCh. 6 - Prob. 68QPCh. 6 - Why do the 3s, 3p, and 3d orbitals have the same...Ch. 6 - Prob. 70QPCh. 6 - Prob. 71QPCh. 6 - Prob. 72QPCh. 6 - Prob. 73QPCh. 6 - Prob. 74QPCh. 6 - Prob. 75QPCh. 6 - Prob. 76QPCh. 6 - Prob. 77QPCh. 6 - Prob. 78QPCh. 6 - Prob. 79QPCh. 6 - Prob. 80QPCh. 6 - Prob. 81QPCh. 6 - Prob. 82QPCh. 6 - Indicate the number of unpaired electrons present...Ch. 6 - Prob. 84QPCh. 6 - Prob. 85QPCh. 6 - Prob. 86QPCh. 6 - Describe the characteristics of transition metals.Ch. 6 - What is the noble gas core? How does it simplify...Ch. 6 - Prob. 89QPCh. 6 - Prob. 90QPCh. 6 - 6.91 Explain why the ground-state electron...Ch. 6 - 6.92 Write the electron configuration of a xenon...Ch. 6 - Prob. 93QPCh. 6 - Prob. 94QPCh. 6 - Prob. 95QPCh. 6 - Prob. 96QPCh. 6 - 6.97 Write the ground-state electron...Ch. 6 - Prob. 98APCh. 6 - Discuss the current view of the correctness of the...Ch. 6 - Distinguish carefully between the following terms:...Ch. 6 - Prob. 101APCh. 6 - Identify the following individuals and their...Ch. 6 - Prob. 103APCh. 6 - Prob. 104APCh. 6 - Prob. 105APCh. 6 - Prob. 106APCh. 6 - Prob. 107APCh. 6 - 6.108 Ionization energy is the minimum energy...Ch. 6 - Prob. 109APCh. 6 - Prob. 110APCh. 6 - Prob. 111APCh. 6 - All molecules undergo vibrational motions. Quantum...Ch. 6 - When an electron makes a transition between energy...Ch. 6 - Prob. 114APCh. 6 - Prob. 115APCh. 6 - Prob. 116APCh. 6 - 6.11 The wave function for the is orbital in the...Ch. 6 - Prob. 118APCh. 6 - Prob. 119APCh. 6 - Prob. 120APCh. 6 - 6.121 Calculate the wavelength and frequency of an...Ch. 6 - Prob. 122APCh. 6 - 6.123 In a photoelectric experiment a student uses...Ch. 6 - Prob. 124APCh. 6 - Prob. 125APCh. 6 - Prob. 126APCh. 6 - Prob. 127APCh. 6 - Prob. 128APCh. 6 - Prob. 129APCh. 6 - Prob. 130APCh. 6 - Prob. 131APCh. 6 - Prob. 132APCh. 6 - 6.133 Blackbody radiation is the term used to...Ch. 6 - Prob. 134APCh. 6 - Prob. 135APCh. 6 - How many photons at 586 nm must be absorbed to...Ch. 6 - Prob. 137APCh. 6 - Prob. 1SEPPCh. 6 - Prob. 2SEPPCh. 6 - What is the energy of a photon with wavelength λ...Ch. 6 - The visible region of the electromagnetic spectrum...
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