Atomic Structure and Properties

The video tutorial explains how to read an element square from the periodic table. It covers the significance of the atomic number, element symbol, and atomic mass. The tutorial also demonstrates how to calculate the number of neutrons and draw Bohr models for elements like lithium, boron, carbon, and neon. Key concepts include understanding atomic structure and applying rounding rules to atomic mass.

What does the atomic number of an element indicate?

• The atomic mass

• The number of protons and electrons

• The number of neutrons

• The element's chemical properties

How is the element symbol formatted?

• First letter is lowercase, second is uppercase

• First letter is uppercase, second is lowercase

• Both letters are uppercase

• Both letters are lowercase

What is the rule for rounding atomic mass?

• Round to the nearest tenth

• Round to the nearest whole number

• Always round up

• Do not round

How do you calculate the number of neutrons in an atom?

• Multiply atomic number by atomic mass

• Subtract atomic number from atomic mass

• Add atomic number and atomic mass

• Divide atomic mass by atomic number

In a Bohr model, how many electrons can the first ring hold?

• Three

• Two

• Four

• One

For lithium, how many neutrons are present?

• Five

• Three

• Six

• Four

What is the atomic mass of boron after rounding?

• Thirteen

• Twelve

• Eleven

• Ten

How many protons does carbon have?

• Four

• Five

• Six

• Seven

What is the atomic number of neon?

• Eight

• Eleven

• Ten

• Nine

In the Bohr model of neon, how many electrons are in the second ring?

• Seven

• Nine

• Six

• Eight