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Potpourri
100

138Ba has this many neutrons

What is 82?

100

151Eu gives off an alpha particle to become this isotope

What is 147Pm?

100

128 grams of a radioisotope leaves the factory and when it arrives, only 32 grams are remaining because this many half lives have gone by.

What is 2 half lives?

100

This is the heaviest element that can be made by fusion and releases energy

What is 56Fe?

100

This is the country with the longest land border with France

What is Brazil?

200

An atom with 31 protons and 38 neutrons has this isotope symbol

What is 69Ga?

200

This isotope undergoes beta decay to leave behind 67Zn

What is 67Cu?
200

You pick up an 86 g sample of 218Po and take 6.10 minutes to walk to the other end of the school, where you find you only have 21.5 grams left because this is the half life of 218Po

What is 3.05 minutes?

200

This is the lightest element that can be produced by fission and releases energy

What is 56Fe?

200

This is the largest rocky planet in our solar system

What is Earth?

300

An atom of 20Ne has this many up quarks

What is 30?

300

A sample of rhenium undergoes this type of decay and transmutes into tungsten atoms

What is positron emission?

OR

What is electron capture?

300

The half-life of this isotope is this long.

What is 25 seconds?

300

During a nuclear explosion, 239Pu splits into 93Zr and 136Xe, and this many of these particles 

What is 10 neutrons?

300

The busiest airport in the world is located in this US city

What is Atlanta?

400

An atom of 180Hf has this many electrons

What is 72?

400

131Ba emits a particle and becomes 131Cs, which means 131Ba had too many of these particles

What is neutrons?

400

At the birth of the universe, 14 billion years ago, you order 500 grams of 238U (hf = 4.4 billion years), and the shipment has finally arrived, but with only this much 238U left

What is 55 grams?

400

During a nuclear reaction, 233U splits into 72Ge and this isotope.

What is 161Nd?

400

On March 25, 2026, this company was found liable for selling addictive products to children and awarded a $6 million verdict to the plaintiff, Kacey.

What is Meta?

OR

What is Google?

500

Silver consists of two stable isotopes: 107Ag and 109Ag, and this is the more abundant isotopes

What is 107Ag?

500

226Ra undergoes 3 rounds of alpha decay, 2 rounds of beta decay, 1 more alpha decay, 2 more beta decays, and 1 more alpha decay to become this stable isotope

What is 206Pb?

500

A lily pad doubles in size every day, and on the 30th day, the lily pad covers the entire pond, so on this day, the lily pad covered half of the pond.

What is the 29th day?

500

During a nuclear reaction, 235U splits into 127I and another isotope that is most likely to undergo this type of decay next.

What is positron emission or electron capture? 

108Y has way too many neutrons (~20 neutrons too many)

500

On March 21, 2026, this musical group returned after a 4-year hiatus caused by all seven members performing mandatory military service.

What is BTS?

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