Multiple Choice
Which of the following is the correct formula for the ionic compound formed between lithium and bromide?
3. Chemical Reactions
Naming Ionic Compounds
Multiple Choice
Which of the following is the correct chemical formula for magnesium hydrogen carbonate?
A
MgCO3
B
Mg(HCO3)
C
Mg2CO3
D
Mg(HCO3)2
Verified step by step guidance1
Understand the composition of magnesium hydrogen carbonate: it consists of magnesium ions (Mg^{2+}) and hydrogen carbonate ions (HCO_3^{-}).
Recall the charges of the ions involved: magnesium ion has a charge of +2, and hydrogen carbonate ion has a charge of -1.
To write the correct formula, balance the total positive and negative charges so the compound is electrically neutral.
Since magnesium has a +2 charge and hydrogen carbonate has a -1 charge, two hydrogen carbonate ions are needed to balance one magnesium ion.
Combine the ions accordingly to write the formula as \(Mg(HCO_3)_2\), indicating one magnesium ion and two hydrogen carbonate ions.
Related Videos
Related Practice
