Questions and Answers
Which is not an ionic compound?
In bonding, main group elements _____ to attain the electronic configuration of the noble gas closest to them in the periodic table.
_____ are negatively charged ions that have _____ electrons than protons.
What is the ion symbol for an atom with twenty (20) protons and eighteen (18) electrons?
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What is the formula for the ionic compound formed when potassium and bromine combine?
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What is the proper name for CuCl?
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What is the proper name for MgF2?
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What is the name of the SO4 2-?
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Which chemistry formula is not correct?
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What is the name of the compound (NH4)2SO4?
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Study Notes
Ionic Compounds
- CBr4 is not an ionic compound; it is a covalent compound.
- Common ionic compounds include AlBr3 and KCl.
Main Group Elements in Bonding
- Main group elements gain, lose, or share electrons to achieve a noble gas electronic configuration.
Ion Charges
- Anions are negatively charged ions with more electrons than protons.
- Cations are positively charged ions with fewer electrons than protons.
Ion Symbols
- An atom with 20 protons and 18 electrons has the ion symbol Ar2+.
Ionic Compound Formulas
- The formula for the ionic compound formed from potassium (K) and bromine (Br) is KBr.
Naming Ionic Compounds
- CuCl is properly named copper (I) chloride, distinguishing its oxidation state.
- MgF2 is correctly referred to as magnesium fluoride, without specifying oxidation state since magnesium only has one.
Sulfate Ion
- The ion SO4²⁻ is called the sulfate ion.
Valid Chemistry Formulas
- Na2SO3, NaNO3, and Na2HCO3 are correct chemical formulas; however, NA2HPO4 is incorrect due to capitalization errors.
Compound Naming
- The compound (NH4)2SO4 is known as ammonium sulfate.
- It can also be referred to as diammonium sulfate, emphasizing the quantity of ammonium ions.
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Description
Test your knowledge with these flashcards focused on key concepts from Chemistry Chapter 3. The quiz covers ionic compounds and the bonding behavior of main group elements. Perfect for students preparing for their exams!
