What atom and symbol matches this electron configuration? 1s22s22p63s33p64s23d104p65s24d105p66s24f145d9 A. Silver( As) B. Germanium(Gu) C. Copper(Co) D. Gold(Au) 2. The number of Valence electrons in an atom with an electron configuration of 1s2 2s2 2p6 3s2 3p4 is... A. 6 B. 2 C. 16 D. 4
What atom and symbol matches this electron configuration? 1s22s22p63s33p64s23d104p65s24d105p66s24f145d9 A. Silver( As) B. Germanium(Gu) C. Copper(Co) D. Gold(Au) 2. The number of Valence electrons in an atom with an electron configuration of 1s2 2s2 2p6 3s2 3p4 is... A. 6 B. 2 C. 16 D. 4
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter6: Electronic Structure And Periodic Properties Of Elements
Section: Chapter Questions
Problem 51E: What additional information do we need to answer the question Which ion has the electron...
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Question
1. What atom and symbol matches this electron configuration? 1s22s22p63s33p64s23d104p65s24d105p66s24f145d9
A. Silver( As)
B. Germanium(Gu)
C. Copper(Co)
D. Gold(Au)
2. The number of Valence electrons in an atom with an electron configuration of 1s2 2s2 2p6 3s2 3p4 is...
A. 6
B. 2
C. 16
D. 4
Expert Solution
Step 1
The electronic configuration is written in
nlx method
n = principle quantum number
l = azimuthal quantum number
x = number of electrons
In neutral atom , number of electrons represent atomic number of element.
From electronic configuration we can find atomic number and symbol of element by counting the number of electrons.
The electrons which ars present in outermost shell are called valence electrons.
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