Electron Configuration Review

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

How many valence electrons does hydrogen have?

Back

1

Front

What is the noble gas configuration of calcium?

Back

[Ar] 4s2

Front

How many valence electrons does chlorine have?

Back

7

Front

What is the electron configuration of phosphorus?

Back

1s2 2s2 2p6 3s2 3p3

Front

How many valence electrons does helium have?

Back

2

Front

What is the significance of noble gas configurations?

Back

Noble gas configurations indicate a stable electron arrangement, often leading to lower reactivity in elements.

Front

What is the electron configuration for an atom with atomic number 12?

Back

1s2 2s2 2p6 3s2 3p0 (Magnesium)

Front

How do you determine the number of valence electrons for main group elements?

Back

The number of valence electrons corresponds to the group number in the periodic table.

Front

What is the electron configuration of oxygen?

Back

1s2 2s2 2p4