Valence Electrons

Front

What is a valence electron?

Back

An electron in the highest occupied energy level of an atom.

Front

How many valence electrons do halogens have?

Back

7

Front

How many valence electrons are in the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3?

Back

5

Front

What group is the element with the electron configuration 1s2 2s2 in?

Back

Group IIA

Front

How many valence electrons are in the electron configuration 1s2 2s2 2p6 3s2?

Back

2

Front

What are valence electrons responsible for?

Back

They determine how an atom can bond with other atoms.

Front

What is the maximum number of valence electrons an atom can have?

Back

8, according to the octet rule.

Front

Which group of elements has 8 valence electrons?

Back

Noble gases.

Front

What is the significance of valence electrons in chemical reactions?

Back

They are involved in forming bonds between atoms.

Front

How do you determine the number of valence electrons in an element?

Back

By looking at its group number in the periodic table.