Nuclear Equations and Mass Numbers

The video tutorial reviews guided practice questions on nuclear equations, focusing on solving for unknown elements by balancing mass and charge. It covers three specific equations, demonstrating how to set up and solve equations for mass and charge, and identifying elements using the periodic table.

What is the first step in solving a nuclear equation?

• Identify the unknown element

• Balance the mass numbers on both sides

• Balance the charge numbers on both sides

• Look up the element on the periodic table

In equation 1A, what is the mass number of the unknown element X?

• 10

• 4

• 6

• 9

What is the charge of the unknown element X in equation 1A?

• 2

• 1

• 4

• 3

In equation 1B, what is the total mass on the left side?

• 9

• 12

• 15

• 13

What is the charge of the unknown element X in equation 1B?

• 1

• 3

• 2

• 4

In equation 1C, what is the mass number of Pu?

• 94

• 96

• 242

• 239

What is the charge of the neutron in equation 1C?

• 0

• 3

• 1

• 2

In equation 1C, what is the mass number of the unknown element X?

• 240

• 243

• 242

• 239

What is the charge of the unknown element X in equation 1C?

• 94

• 96

• 90

• 92

Which element corresponds to a charge of 96 in equation 1C?

• H

• Cm

• Pu

• Li