Unit 4: Chemical Bonding and Molecular Structure

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What is the term used to describe a group of atoms that exist together as one species having characteristic properties?

Atom

Molecule (correct)

Compound

Element

Which theory can be used to predict the geometry of simple molecules?

Molecular orbital theory

Hybridization theory

Octet rule

VSEPR theory (correct)

What approach explains the formation of covalent bonds by overlapping atomic orbitals?

Valence bond approach (correct)

Kössel-Lewis approach

VSEPR theory

Hybridization approach

What type of bonds involve the sharing of electrons between atoms?

Covalent bonds Signup and view all the answers

Which theory explains the concept of hydrogen bond?

Valence bond theory Signup and view all the answers

Which type of hybridization involves s, p, and d orbitals?

dsp2 hybridization Signup and view all the answers

According to the Kössel-Lewis approach, how many electrons can the outer shell of an atom accommodate?

Eight electrons Signup and view all the answers

What did Lewis postulate about the achievement of a stable octet by atoms?

It occurs through chemical bond formation, either by electron transfer or electron sharing Signup and view all the answers

What did Kössel and Lewis base their explanation of valence on?

The inertness of noble gases Signup and view all the answers

What is the role of the 'kernel' according to Lewis's model of the atom?

It contains all the inner electrons Signup and view all the answers

How do atoms achieve a stable outer octet of electrons according to Lewis's model?

By sharing a pair of electrons between atoms Signup and view all the answers

What happens in the case of sodium and chlorine according to Lewis's model?

Sodium loses an electron to chlorine Signup and view all the answers

In Lewis's model, how is a chemical bond formed in molecules like Cl2, H2, F2, etc.?

By the sharing of a pair of electrons between the atoms Signup and view all the answers

What do Lewis symbols represent in the formation of a molecule?

The outer shell electrons that take part in chemical combination Signup and view all the answers

What is the main purpose of chemical bonding according to the text?

To attain stability Signup and view all the answers

What does every system tend to be according to the text?

More stable Signup and view all the answers