Ions and Lewis Structures Flashcard

Front

How does a neutral bromine (Br) atom form a bromide ion?

Back

It gains one electron.

Front

What group would element X be found in if it has 5 valence electrons?

Back

Group 15.

Front

If an element has 3 valence electrons, what charge will its ion most likely have?

Back

+3.

Front

According to the octet rule, most elements need _______ valence electrons to be stable.

Back

8.

Front

What is a cation?

Back

A positively charged ion formed by losing electrons.

Front

What is an anion?

Back

A negatively charged ion formed by gaining electrons.

Front

What is the octet rule?

Back

Atoms tend to gain, lose, or share electrons to have 8 valence electrons.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How do you determine the charge of an ion from its valence electrons?

Back

If an element has fewer than 4 valence electrons, it tends to lose them and form a positive ion; if it has more than 4, it tends to gain electrons and form a negative ion.

Front

What is the significance of Lewis structures?

Back

They visually represent the bonding between atoms and the lone pairs of electrons in a molecule.