Names and Formulas for Covalent Compounds

Name the following molecular compounds: CO2, CCl4, SiO2, P2O3, SO2.

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Answer explanation

The compounds are named as follows: CO2 - carbon dioxide, CCl4 - carbon tetrachloride, SiO2 - silicon dioxide, P2O3 - diphosphorus trioxide, SO2 - sulfur dioxide. Each name reflects the number of atoms present.

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What is the chemical formula for this molecule?

• SNa₃

• H₃O

• NaCl

• H₂O

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What is the correct formula for this molecule?

• Si₄F

• SiF₄

• SiF

• Si₄F₄

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Which of the following molecules is primarily held together by covalent bonds?

• NaCl

• CO₂

• MgO

• KBr

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• Carbon dioxide

• Carbon monoxide

• Carbon trioxide

• Carbon tetroxide

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Which of the following is the correct formula for sulfur hexafluoride?

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• Dinitrogen pentoxide

• Nitrogen dioxide

• Nitrogen pentoxide

• Dinitrogen trioxide

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Which of the following compounds is named phosphorus trichloride?

What is the correct formula for dinitrogen tetroxide?

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• Hydrogen peroxide

• Water

• Hydrogen oxide

• Dihydrogen monoxide

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