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Write the electron configuration for each ion. What do all of the electron

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 93P Chapter 9

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 93P

PROBLEM 93P

Write the electron configuration for each ion. What do all of the electron configurations have in common?

(a) Ca2+

(b) K+

(c) S2−

(d) Br−

Step-by-Step Solution:
Step 1 of 3

Solution 93P

Here, we are going to write the electronic configuration of each ion.

  1. Ca2+

The atomic number of Ca =20

The electronic configuration of Ca = 1s22s22p63s23p64s2 = [Ar] 4s2

Ca - 2e- ---------------> Ca2+

Thus, the electronic configuration of Ca2+  = 1s22s22p63s23p6 =  [Ar]

(b) K+

The atomic number of K =19

The electronic configuration of K = 1s22s22p63s23p64s1 = [Ar] 4s1

K - e- ---------------> K+

Thus, the electronic configuration of K+  = 1s22s22p63s23p6 =  [Ar]

(c) S2−

The atomic number of S =16

The electronic configuration of S = 1s22s22p63s23p4 = [Ne] 3s23p4

S +2 e- ---------------> S2-

Thus, the electronic configuration of S2-  = 1s22s22p63s23p6 =  [Ar]

(d) Br

The atomic number of Br =35

The electronic configuration of Br = [Ar] 3d104s24p5

Br + e- ---------------> Br-

Thus, the electronic configuration of Br-  = [Ar] 3d104s24p6  =  [Kr]

All the ions have common inner electron configuration of Noble gas [Argon(Ar)and Krypton(Kr)]

Step 2 of 3

Chapter 9, Problem 93P is Solved
Step 3 of 3

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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Write the electron configuration for each ion. What do all of the electron