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 neutral SeF2O?

Selenium (Se) is the central atom, bonded to two fluorine (F) atoms and one oxygen (O) atom, with one lone pair on Se.

Fluorine (F) is the central atom, bonded to one selenium (Se) atom and two oxygen (O) atoms.

Oxygen (O) is the central atom, bonded to two selenium (Se) atoms and one fluorine (F) atom, with no lone pairs on O.

Selenium (Se) is the central atom, bonded to three fluorine (F) atoms, with no oxygen present.

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Verified step by step guidance

Identify the central atom by considering electronegativity and bonding capacity. Typically, the least electronegative atom that can form multiple bonds is the central atom. Selenium (Se) is less electronegative than fluorine (F) and oxygen (O), so Se is likely the central atom.

Count the total valence electrons for the molecule SeF2O. Selenium has 6 valence electrons, each fluorine has 7, and oxygen has 6. Sum these to find the total number of valence electrons available for bonding and lone pairs.

Arrange the atoms with Se in the center, bonded to two fluorine atoms and one oxygen atom. Draw single bonds initially between Se and each of these atoms, using 2 electrons per bond.

Distribute the remaining valence electrons to satisfy the octet rule for the outer atoms first (fluorine and oxygen), then place any leftover electrons as lone pairs on the central selenium atom.

Check the Lewis structure to ensure all atoms have a complete octet (or duet for hydrogen if present), and confirm that selenium has one lone pair, consistent with the correct description.