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Chapter 5: Problem 36

Write the formula for magnesium bicarbonate.

Short Answer

Expert verified
The formula for magnesium bicarbonate is \(Mg(HCO_3)_2\).

Step by step solution

01

Identify the Ions

First, we identify the ions in the compound. Magnesium (#Mg#) is a Group 2 element in the periodic table, which means it forms a +2 cation (Mg²⁺). Bicarbonate (#HCO3#) is a polyatomic anion with a -1 charge (HCO₃⁻).
02

Use the Crisscross Method

Next, we use the crisscross method to balance the charges between the cation and the anion. This is done by using the absolute value of the charge from one ion as the subscript for the other ion, and vice versa: Mg²⁺ --> the charge number 2 becomes the subscript for HCO₃ HCO₃⁻ --> the charge number 1 becomes the subscript for Mg
03

Write the Formula

The resulting formula becomes: \(Mg(HCO_3)_2\)
04

Finalize the Formula

Now we have the chemical compound formula for magnesium bicarbonate: \(Mg(HCO_3)_2\)

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Most popular questions from this chapter

Draw dot diagrams for \(\mathrm{Cl}_{2}\) and for \(\mathrm{MgCl}_{2}\) (put \(\mathrm{Mg}\) in the middle) that agree with the type of bonding occurring in each. (That is, show electrons as being shared or transferred, and if they are transferred, show the charges of the resulting ions.)

Explain what is meant by resonance forms.

Draw a dot diagram for \(\mathrm{I}_{3^{\prime}}\). (Hint: Then central I atom is an expanded octet atom in this molecule. Don't be afraid to stick lone pairs of electrons on it if you have to.)

Give the molecular formula for hypochlorous acid and perchloric acid.

The greater the electronegativity difference between two bonded atoms, the greater the percent character of the bond.
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