Electron Configuration & Lewis Dot Diagrams TEST reg

Front

How many electrons should sodium, atomic number 11, have around its Lewis dot model?

Back

1

Front

What are valence electrons?

Back

The number of electrons in the outermost shell.

Front

Most elements will gain or lose electrons so that they end up with _______ valence electrons.

Back

8

Front

How do positive ions form?

Back

By losing electrons.

Front

What is the electron configuration of sodium (Na)?

Back

1s² 2s² 2p⁶ 3s¹

Front

What is a Lewis dot diagram?

Back

A representation of the valence electrons in an atom.

Front

How many valence electrons does magnesium (Mg) have?

Back

2

Front

What is the electron configuration of magnesium (Mg)?

Back

1s² 2s² 2p⁶ 3s²

Front

What is the significance of the octet rule?

Back

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

Front

How do negative ions form?

Back

By gaining electrons.