Gifted Atomic Structure Review

What type of reaction is ²³¹Pa --> ⁴He + ²²⁷Ac?

• Fusion
• Fission
• Neither
• Not enough info.

Which isotope of iron is probably the most common?

• iron-55
• iron-56
• iron-57
• iron-58

How many protons does this isotope have: ⁴⁵₂₁Sc?

• 45
• 21
• 24
• 22

What does Thorium-234 turn into if it undergoes beta decay?

• Protactinium-234
• Moscoviun-288
• Actinium-234
• Americium-243

What does Thorium-234 turn into if it undergoes positron emission?

• Protactinium-234
• Moscoviun-288
• Actinium-234
• Americium-243

A certain isotope has a mass number of 84 and an atomic number of 36.  How many protons, neutrons, and electrons?

• 84p, 36n, 48e
• 36p, 48n, 84e
• 36p, 48n, 36e
• 40p, 84n, 36e

Candium has a half-life of 713 million years.  How much time must pass for 100 grams to turn into 25 grams?

• 713 million years
• 1426 million years
• 2139 million years
• 2852 million years

How many neutrons are in Samarium-150?

• 150
• 62
• 200
• 88

How many protons are in Samarium-150?

• 150
• 62
• 200
• 88

What is the symbol for beta particle?

• ⁴₂α
• ⁰_-1β
• ⁰₊₁β
• ⁰₀γ