Silicon Isotopes and Atomic Structure

The video tutorial explains how to determine the number of protons, neutrons, and electrons in silicon isotopes. It covers the atomic number of silicon, which is 14, and how this relates to the number of protons and electrons in neutral silicon atoms. The tutorial also discusses the three stable isotopes of silicon, their mass numbers, and how to calculate the number of neutrons in each. Additionally, it explains the concept of isotope abundance and how to use nuclear notation to represent isotopes.

What is the atomic number of silicon?

• 18

• 16

• 14

• 12

In a neutral silicon atom, how do the number of protons compare to the number of electrons?

• Electrons are more

• Protons are more

• Cannot be determined

• They are equal

What makes isotopes of silicon different from each other?

• Number of electrons

• Number of protons

• Atomic number

• Number of neutrons

If a silicon isotope has a mass number of 28, how many neutrons does it have?

• 18

• 12

• 14

• 16

Which isotope of silicon is the most abundant?

• Silicon-29

• Silicon-28

• Silicon-31

• Silicon-30

What is the mass number of the silicon isotope that makes up about 5% of a sample?

• 28

• 30

• 29

• 31

How many neutrons are in silicon-30?

• 17

• 14

• 15

• 16

What does the nuclear notation for silicon-29 include?

• Atomic number 15

• Atomic number 16

• Mass number 28

• Mass number 29

How is the average atomic mass on the periodic table determined?

• By the average of all isotopes based on abundance

• By the lightest isotope

• By the heaviest isotope

• By the most abundant isotope

What is the significance of the number 14 in silicon's nuclear notation?

• It represents the number of electrons

• It represents the mass number

• It represents the number of neutrons

• It represents the atomic number