Atomic Structure and Properties

The video tutorial explains how to determine the number of protons, neutrons, and electrons in various atoms using the periodic table. It provides examples with different elements, illustrating how to find atomic numbers, mass numbers, and symbols. The tutorial emphasizes the relationship between protons and electrons and explains how to calculate the number of neutrons when given the mass number.

What is the primary tool needed to determine the number of protons in an atom?

• A microscope

• A chemistry textbook

• A calculator

• A periodic table

How many protons does an oxygen atom have?

• 12

• 10

• 8

• 6

What is the mass number of helium if it has 2 protons and 2 neutrons?

• 6

• 4

• 8

• 2

If lithium has a mass number of 7 and 3 protons, how many neutrons does it have?

• 5

• 4

• 2

• 3

Which element has 6 protons and 7 neutrons?

• Nitrogen

• Fluorine

• Carbon

• Oxygen

What is the mass number of sulfur if it has 16 protons and 16 neutrons?

• 34

• 30

• 28

• 32

Chlorine has 17 protons. What is its mass number if it has 18 neutrons?

• 37

• 35

• 34

• 36

What is the atomic number of calcium?

• 18

• 19

• 20

• 21

If potassium has a mass number of 39 and 19 protons, how many neutrons does it have?

• 18

• 21

• 19

• 20

What is the symbol for iron?

• I

• Fe

• In

• Ir