PS1-1.3: Valence Electrons & Ions

Front

What are valence electrons?

Back

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

Front

How many valence electrons does Bromine (Br) have?

Back

7

Front

How many valence electrons does Aluminum (Al) have?

Back

3

Front

What is a cation?

Back

A cation is a positively charged ion that has lost one or more electrons.

Front

What is an anion?

Back

An anion is a negatively charged ion that has gained one or more electrons.

Front

How many valence electrons does Tin (Sn) have?

Back

4

Front

What is the significance of valence electrons in chemical reactions?

Back

Valence electrons determine how an atom will bond with other atoms and its reactivity.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is the electron configuration of Bromine (Br)?

Back

1s² 2s² 2p⁶ 3s² 3p⁵.

Front

What is the difference between a cation and an anion?

Back

A cation is positively charged (lost electrons), while an anion is negatively charged (gained electrons).