Chem 1 U3 Lewis Structures Flashcardizz 5

Front

What is the octet rule?

Back

The octet rule states that atoms tend to form bonds in such a way that they have eight valence electrons, achieving a stable electron configuration similar to that of noble gases.

Front

How many valence electrons do most elements need according to the octet rule?

Back

8

Front

What is the Lewis structure for ammonia (NH3)?

Back

The Lewis structure for ammonia shows a nitrogen atom bonded to three hydrogen atoms, with a lone pair of electrons on the nitrogen, totaling 8 valence electrons.

Front

What should you do if your Lewis structure does not match the required number of valence electrons?

Back

Add a multiple bond such as a double or triple bond to ensure that each atom achieves a full octet.

Front

What type of bond is formed between nonmetals?

Back

Covalent bond.

Front

Which compound is an example of an ionic bond?

Back

CaCl2 (Calcium Chloride).

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons.

Front

What is a lone pair in a Lewis structure?

Back

A lone pair is a pair of valence electrons that are not shared with another atom and are not involved in bonding.

Front

How do you determine the total number of valence electrons in a molecule?

Back

Add the valence electrons of all the atoms in the molecule.