Electron Arrangement and Energy Levels

Front

What is the electron arrangement of sodium with 11 electrons?

Back

2,8,1

Front

How many energy levels does sodium have?

Back

3

Front

How many electrons does the first energy level contain to be considered full?

Back

2

Front

Which energy level is the lowest?

Back

1

Front

What is electron configuration?

Back

It is the arrangement of electrons in the energy levels/shells.

Front

What is the maximum number of electrons in the second energy level?

Back

8

Front

What is the maximum number of electrons in the third energy level?

Back

18

Front

What is the significance of the electron arrangement in an atom?

Back

It determines the chemical properties and reactivity of the element.

Front

What is the term for the outermost electrons in an atom?

Back

Valence electrons

Front

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

Back

By looking at its group number in the periodic table.