Valence Electrons and Zinc Properties

The video tutorial explains how to determine the number of valence electrons for elements using the periodic table, with a focus on hydrogen and chlorine. It highlights the complexity of transition metals like zinc, requiring an understanding of electron configuration. The tutorial details zinc's electron configuration, showing it has two valence electrons in the s2 orbital. When zinc forms chemical bonds, it loses these electrons, resulting in a 2+ charge.

Which group on the periodic table does hydrogen belong to?

• Group 1

• Group 18

• Group 2

• Group 17

How many valence electrons does chlorine have?

• 1

• 5

• 7

• 17

Why is zinc considered more complex when determining valence electrons?

• It is a noble gas.

• It is a transition metal.

• It has a full outer shell.

• It is a non-metal.

What is the highest energy level in zinc's electron configuration?

• Fifth energy level

• Second energy level

• Third energy level

• Fourth energy level

How many valence electrons does zinc have?

• 4

• 3

• 2

• 1

What happens to zinc's electrons when it forms chemical bonds?

• It loses one electron.

• It gains one electron.

• It loses two electrons.

• It gains two electrons.

What charge does zinc have after losing its valence electrons?

• 1-

• 2+

• 1+

• 2-