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A set of chemistry homework questions focusing on nomenclature and the formation of ionic compounds. The questions involve identifying the type of structure, writing formulas for compounds, and naming various ionic compounds. Students are expected to have a solid understanding of electron configurations, ionic charges, and the rules for naming ionic compounds.
What you will learn
Typology: Exercises
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This print-out should have 13 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering.
ChemPrin3e T02 60 001 10.0 points If the following crystallize in the same type of structure, which has the lowest lattice energy?
Explanation: Lowest charge densities due to larger size.
ChemPrin3e T02 10 002 10.0 points An element E has the electronic configuration [Ne] 3s^2 3 p^1. Write the formula of its com- pound with sulfate.
Explanation: E is aluminum; since it has three valence electrons it forms a +3 ion isoelectronic with Ne.
ChemPrin3e T02 76 003 10.0 points An element E has the electronic configura- tion 1s^2 2 s^2 2 p^4. What is the formula of its
compound with lithium?
Explanation: E is oxygen; since it has six valence elec- trons, it forms a 2− ion isoelectronic with Ne.
Mlib 07 0233 004 10.0 points
Which of the following is the best represen- tation of the compound calcium sulfide?
bb
bb bb bb
S bb
bb bb bb
bb bb bb bb
bb bb bb bb
S bb
bb bb bb
correct
Explanation: The metal loses all of its outer (valence) electrons; the non-metal gains sufficient elec- trons to form an octet. The ratio of the negative and positive ions is chosen so there is no overall charge.
Sparks ionic name 005 005 10.0 points Name the compound CaBr 2.
Explanation:
Sparks ionic form 002 006 10.0 points Choose the formula for the compound magne- sium sulfide.
Explanation:
Name Formula Match 007 10.0 points Choose the pair of names and formulae that do not match.
Explanation:
ChemPrin3e D 05 008 10.0 points What is the formula of carbon disulfide?
Explanation: Using the molecular naming system, there is no prefix on carbon implying one carbon atom per molecule and the ‘di’ prefix on ‘sul- fide’ implies there are two sulfur atoms. The formula is CS 2.
ChemPrin3e D 24c 009 10.0 points Name the compound CaC 2 O 4.
Mlib 01 2039 010 10.0 points Give the formula for sodium nitrate.
Explanation:
Na b gives up an electron to form the Na
cation and b bb
b b b S acquires two electrons to
form the bb bb
b b bb
2 − anion:
Na b+ Na b+ b bb
b b Sb −→
Na
Na
bb bb
b b Sbb
2 − −→ Na 2 S