Chemistry: An Atoms-Focused Approach

Published by W. W. Norton & Company
ISBN 10: 0393912345
ISBN 13: 978-0-39391-234-0

Chapter 4 - Chemical Bonding - Questions and Problems - Page 179: 54

Answer

(d)

Work Step by Step

Option (a) is incorrect. This compound is calcium nitride. Options (b) and (c) are incorrect. Calcium has a valence of 2+ whereas the oxoanion nitrate has a valence of 1-. Therefore, we would need two nitrate ions to balance out the charge on the calcium ion. Both these formulas do not show the correct ratio of calcium to nitrate ions. Option (d) is correct. This compound is calcium nitrate. Calcium's elemental symbol is Ca. Nitrate's symbol is NO$_3$. The correct formula for calcium nitrate, thus, is Ca(NO$_3$)$_2$.
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