Question

1. observe: click reset (?). the electrons in the outermost orbit, called valence electrons, help to create chemical bonds. create a lithium atom (3 protons, 4 neutrons, 3 electrons). how many valence electrons are in a neutral lithium atom? ______ 4. diagram: turn on show electron dot diagram. the valence electrons of an atom are shown in an electron dot diagram. each dot represents a valence electron. draw the electron dot diagram for neutral lithium: ______

Explanation:

Step1: Recall electron - shell configuration

Lithium has 3 electrons. The electron - shell configuration is 2, 1. The first shell can hold 2 electrons and the second shell starts to fill after the first is full.

Step2: Identify valence electrons

Valence electrons are in the outermost shell. For lithium with electron - shell configuration 2, 1, the number of valence electrons is 1.

Step3: Draw electron - dot diagram

The electron - dot diagram for lithium has one dot representing the single valence electron around the chemical symbol Li.

Answer:

1; Li•