Beta Decay and Atomic Numbers

The video tutorial explains beta decay, a process where a beta particle (electron) is emitted from the nucleus, increasing the atomic number by one while keeping the atomic mass constant. The tutorial provides examples, including the transformation of neptunium to plutonium, xenon to cesium, and an unknown element to americium, illustrating the concept of beta decay and its effects on atomic structure.

What is the main focus of the video tutorial?

• Beta decay

• Gamma decay

• Alpha decay

• Nuclear fusion

What is emitted during beta decay?

• Beta particles

• Protons

• Neutrons

• Alpha particles

How does beta decay affect the atomic number of an element?

• Decreases by 2

• Remains the same

• Increases by 1

• Decreases by 1

In the example of neptunium undergoing beta decay, what is the resulting element?

• Uranium

• Plutonium

• Cesium

• Thorium

What remains unchanged during beta decay?

• Atomic number

• Number of neutrons

• Atomic mass number

• Number of protons

When xenon undergoes beta decay, which element is formed?

• Barium

• Tellurium

• Cesium

• Iodine

What is the atomic number of cesium formed from xenon after beta decay?

• 56

• 55

• 57

• 54

In the final example, what is the initial element if the product is americium with an atomic number of 95?

• Neptunium

• Plutonium

• Thorium

• Uranium

What is the atomic mass number of the initial element in the final example?

• 239

• 240

• 241

• 238

What is the atomic number of plutonium used in the final example?

• 95

• 94

• 92

• 93