A compound contains an unknown ion X and has the formula XCl2. Ion X contains 20 electrons. What is the identity of X? Group of answer choices Sc+ Cr2+ Mn3+ Ti2+ Ca2+
A compound contains an unknown ion X and has the formula XCl2. Ion X contains 20 electrons. What is the identity of X? Group of answer choices Sc+ Cr2+ Mn3+ Ti2+ Ca2+
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
A compound contains an unknown ion X and has the formula XCl2. Ion X contains 20 electrons. What is the identity of X?
Group of answer choices
Sc+
Cr2+
Mn3+
Ti2+
Ca2+
Expert Solution
Step 1
XCl2 has X2+ as Cl has charge -1
Thus answer might be
Cr2+ or Ti2+ or Ca2+
NOW
Cr2+ has 22 electrons
Ti2+ has 20 electrons
Ca2+ has 18 electrons
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