Atomic Structure and Properties

The video tutorial explains how to find information about neutral atoms using the periodic table. It covers the process of identifying the number of protons, electrons, and neutrons for elements like helium, argon, bromine, and selenium. The tutorial emphasizes the importance of the atomic number and atomic mass in determining these subatomic particles and provides step-by-step examples for each element.

What tool is essential for finding information about neutral atoms?

• A microscope

• A periodic table

• A textbook

• A calculator

What is the atomic number of helium?

• 3

• 2

• 4

• 1

How many protons does helium have?

• 2

• 3

• 4

• 1

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

• Atomic mass minus atomic number

• Atomic number minus atomic mass

• Number of electrons minus protons

• Number of protons plus electrons

What is the atomic number of argon?

• 16

• 17

• 18

• 19

How many neutrons does argon have?

• 18

• 20

• 24

• 22

What is the atomic mass of bromine when rounded to the nearest whole number?

• 78

• 79

• 81

• 80

How many electrons does bromine have?

• 33

• 34

• 36

• 35

What is the atomic number of selenium?

• 34

• 33

• 35

• 32

How many neutrons does selenium have?

• 48

• 47

• 45

• 46