Lewis Structures
Chemistry ⇒ Chemical Bonding and Structure
Lewis Structures starts at 9 and continues till grade 12.
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Describe the steps to draw a Lewis structure for a simple molecule.
Explain why hydrogen and helium do not follow the octet rule in their Lewis structures.
How many bonding pairs and lone pairs are present in the Lewis structure of H₂O?
How many electrons are shared in a triple bond?
How many lone pairs are present on the central atom in the Lewis structure of ammonia (NH₃)?
How many single bonds are present in the Lewis structure of ethane (C₂H₆)?
How many total electrons are represented in the Lewis structure of N₂?
How many total valence electrons are present in the Lewis structure of ammonia (NH₃)?
Which of the following best describes a lone pair?
(1) A pair of electrons shared between two atoms
(2) A pair of electrons not involved in bonding
(3) A single electron on an atom
(4) Two atoms bonded together
Which of the following elements is most likely to form a double bond in a Lewis structure?
(1) Hydrogen
(2) Oxygen
(3) Sodium
(4) Neon
Which of the following is a correct statement about Lewis structures?
(1) They show only the atoms present in a molecule
(2) They show the arrangement of atoms and all valence electrons
(3) They show the physical shape of the molecule
(4) They show only the bonds, not lone pairs
Which of the following is NOT a rule for drawing Lewis structures?
(1) Count total valence electrons
(2) Place the least electronegative atom in the center
(3) Hydrogen is always a central atom
(4) Complete octets for all atoms (except hydrogen)
Fill in the blank: In a Lewis structure, a pair of dots represents a ________ pair of electrons.
Fill in the blank: In a Lewis structure, a single line between two atoms represents a ________ bond.
Fill in the blank: In the Lewis structure of CO₂, each oxygen atom forms a ________ bond with the carbon atom.
Fill in the blank: The Lewis structure for BeCl₂ shows ______ bonds between beryllium and chlorine.
True or False: All atoms in a Lewis structure must always have a complete octet.
True or False: In a Lewis structure, hydrogen can have more than two electrons around it.
True or False: Lone pairs are shown as dots in Lewis structures.
True or False: Resonance structures are different possible Lewis structures for the same molecule.
