Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

11. Bonding & Molecular Structure

Lewis Dot Structures: Neutral Compounds

General Chemistry

11. Bonding & Molecular Structure

Lewis Dot Structures: Neutral Compounds

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Multiple Choice

Which of the following statements correctly describes the Lewis dot structure of the neutral compound BrF_3?

BrF_3 has two single bonds and one double bond between Br and F atoms, and two lone pairs on the Br atom.

BrF_3 has three double bonds between Br and F atoms, and no lone pairs on the Br atom.

BrF_3 has three single bonds between Br and F atoms, and two lone pairs on the Br atom.

BrF_3 has three single bonds between Br and F atoms, and one lone pair on the Br atom.

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Verified step by step guidance

Step 1: Determine the total number of valence electrons in BrF_3. Bromine (Br) has 7 valence electrons, and each fluorine (F) atom has 7 valence electrons. Since there are three fluorine atoms, calculate the total as: $7 + 3 \times 7$.

Step 2: Draw the skeletal structure with bromine as the central atom bonded to three fluorine atoms by single bonds. Each single bond represents 2 electrons shared between atoms.

Step 3: Distribute the remaining valence electrons to complete the octets of the fluorine atoms first, since fluorine is more electronegative and typically completes its octet with lone pairs.

Step 4: Assign any leftover electrons to the central bromine atom as lone pairs. Remember that bromine can have an expanded octet because it is in period 4 of the periodic table.

Step 5: Count the number of bonds and lone pairs on bromine. Verify that bromine has three single bonds to fluorine atoms and two lone pairs, which matches the correct Lewis structure for BrF_3.