Answer
XCl
Work Step by Step
The element X has only one electron in its outermost shell. It will loose the electron and form $X^{+}$ ion, which combines with $Cl^{-}$ ion to form XCl.
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
Published by
Cengage Learning
ISBN 10:
1285199049
ISBN 13:
978-1-28519-904-7
Chapter 5 - Electron Configurations and the Periodic Table - Questions for Review and Thought - Applying Concepts - Page 240f: 123
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