Valence Electrons and Water Molecule

The video tutorial explains how to determine the number of valence electrons in a water molecule (H2O) using the periodic table. It covers the valence electrons of hydrogen and oxygen, and demonstrates how to construct the Lewis structure for water. The tutorial highlights the importance of valence electrons in forming chemical bonds and achieving stability through the octet rule.

What is the primary tool used to determine the number of valence electrons in a molecule?

• Atomic Mass

• Periodic Table

• Molecular Formula

• Chemical Equation

How many valence electrons does a single hydrogen atom have?

• Two

• Four

• One

• Three

In which group of the periodic table is oxygen found?

• Group 16

• Group 14

• Group 12

• Group 18

How many total valence electrons are present in a water molecule (H2O)?

• Eight

• Six

• Ten

• Four

Where is the oxygen atom placed in the Lewis structure of water?

• On the outside

• At the top

• At the bottom

• In the center

What type of bond is formed between the atoms in a water molecule?

• Covalent bond

• Metallic bond

• Hydrogen bond

• Ionic bond

How many electrons are shared between the hydrogen and oxygen atoms in water?

• Eight

• Six

• Four

• Two

What is the term used to describe the stable electron configuration of oxygen in water?

• Quartet

• Sextet

• Duet

• Octet

How many electrons does each hydrogen atom need to be stable in a water molecule?

• Eight

• Six

• Four

• Two

What is the total number of valence electrons used in the Lewis structure of water?

• Twelve

• Ten

• Six

• Eight