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Chapter 2: Q.48E (page 125)

For each of the following compounds, state whether it is ionic or covalent, and if it is ionic, write the symbols for the ions involved:

  1. \(KCl{O_4}\)
  2. \(Mg{\left( {{C_2}{H_3}{O_2}} \right)_2}\)
  3. \({H_2}S\)
  4. \(A{g_2}S\)
  5. \({N_2}C{l_4}\)
  6. \(Co{\left( {N{O_3}} \right)_2}\)

Short Answer

Expert verified
  1. Ionic Compound \(\left( {{K^ + },ClO_4^ - } \right)\)
  2. Ionic Compound \(\left( {M{g^{2 + }},{C_2}{H_3}O_2^ - } \right)\)
  3. Covalent Compound
  4. Ionic Compound \(\left( {A{g^ + },{S^{2 - }}} \right)\)
  5. Covalent Compound
  6. Ionic Compound \(\left( {C{o^{2 + }},NO_3^ - } \right)\)

Step by step solution

01

Step 1. Finding the way to identify the compounds as Covalent or Ionic

As we know that, Metals with Non-metals forms ionic compound, and Non-metals with Non-metals forms covalent compound.

In general, Polyatomic ions are non-metal.

02

Step 2.  Analyzing given compounds one by one  

  1. \(KCl{O_4}\)\( \to \)One is metal and other is polyatomic ion. So, it is ionic. Ions are \(\left( {{K^ + },ClO_4^ - } \right)\)
  2. \(Mg{\left( {{C_2}{H_3}{O_2}} \right)_2}\)\( \to \)One is metal and other is polyatomic ion. So, it is ionic. Ions are\(\left( {M{g^{2 + }},{C_2}{H_3}O_2^ - } \right)\)
  3. \({H_2}S\)\( \to \)Both are non-metals. So, it is covalent. Since it is covalent, no ion exist.
  4. \(A{g_2}S\)\( \to \)One is metal and other is non-metal. So, it is ionic. Ions are\(\left( {A{g^ + },{S^{2 - }}} \right)\)
  5. \({N_2}C{l_4}\)\( \to \)Both are non-metals. So, it is covalent. Since it is covalent, no ion exist.
  6. \(Co{\left( {N{O_3}} \right)_2}\)\( \to \) One is metal and other is polyatomic ion. So, it is ionic. Ions are \(\left( {C{o^{2 + }},NO_3^ - } \right)\)

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Most popular questions from this chapter

Use the periodic table to give the name and symbol for each of the following elements:

(a) The Nobel gas in the same period as Germanium.

(b) The Alkaline earth metal in the same period as selenium.

(c) The Halogen in the same period as lithium.

(d) The Chalcogen in the same period as cadmium.

The following compounds are found in common household products. Write the formulas for each compound:

a. Potassium Phosphate

b. Copper (II) sulfate

c. Calcium Chloride

d. Titanium (IV) Dioxide

e. Ammonium nitrate

f. Sodium bisulfate (thecommon name for sodium hydrogen sulfate)

Predict and test the behavior of 伪 particles fired at a 鈥減lum pudding鈥� model atom.

(a) Predict the paths taken by 伪 particles that are fired at atoms with a Thomson鈥檚 plum pudding model structure. Explain why you expect the 伪 particles to take these paths.

(b) If 伪 particles of higher energy than those in (a) are fired at plum pudding atoms, predict how their paths will differ from the lower-energy 伪 particle paths. Explain your reasoning.

(c) Now test your predictions from (a) and (b). Open the Rutherford Scattering simulation (http://openstaxcollege.org/l/16PhetScatter) and select the 鈥淧lum Pudding Atom鈥� tab. Set 鈥淎lpha Particles Energy鈥� to 鈥渕in,鈥� and select 鈥渟how traces.鈥� Click on the gun to start firing 伪 particles. Does this match your prediction from (a)? If not, explain why the actual path would be that shown in the simulation. Hit the pause button, or 鈥淩eset All.鈥� Set 鈥淎lpha Particles Energy鈥� to 鈥渕ax,鈥� and start firing 伪 particles. Does this match your prediction from (b)? If not, explain the effect of increased energy on the actual paths as shown in the simulation.

Write the molecular and empirical formulas of the following compounds:

a)

(b)

(c)

(d)

Use the Build a Molecule simulation (http://openstaxcollege.org/l/16molbuilding) to repeat Exercise 2.34, but build a molecule with two carbons, six hydrogens, and one oxygen.(a) Draw the structural formula of this molecule and state its name.(b) Can you arrange these atoms to make a different molecule? If so, draw its structural formula and state its name.(c) How are the molecules drawn in (a) and (b) the same? How do they differ? What are they called (the type of relationship between these molecules, not their names)?
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