Molecular Structure and Types

The video tutorial introduces the concept of atomicity, which is the number of atoms in a molecule of an element. It explains the classification of molecules into monoatomic, diatomic, triatomic, and polyatomic based on the number of atoms they contain. Examples such as sodium, oxygen, ozone, and sulfur are used to illustrate these concepts. The tutorial concludes with an exercise to classify different molecules by their atomicity.

What is atomicity in the context of molecules?

• The number of atoms in a molecule

• The number of molecules in a compound

• The number of electrons in an atom

• The number of protons in a nucleus

Which of the following is an example of a monoatomic molecule?

• Sodium

• Water

• Chlorine

• Oxygen

Why are noble gases considered monoatomic?

• They are always in a gaseous state

• They have two atoms in their molecules

• They exist freely as single atoms

• They form compounds easily

Which of the following is a diatomic molecule?

• Helium

• Ozone

• Nitrogen

• Phosphorus

What is the molecular formula for oxygen?

• O

• O2

• O3

• O4

What does the 'tri' in triatomic molecules signify?

• Two atoms

• Four atoms

• Five atoms

• Three atoms

Which molecule is an example of a triatomic molecule?

• Sulfur

• Chlorine

• Ozone

• Oxygen

What defines a polyatomic molecule?

• Contains three atoms

• Contains one atom

• Contains more than three atoms

• Contains two atoms

Which of the following is a polyatomic molecule?

• Hydrogen

• Sulfur

• Neon

• Iodine

How many atoms are in a molecule of sulfur?

• Eight

• One

• Two

• Three