Could Maroon 5 have hypothetically held a concert at Roman Colosseum?
The Roman Colosseum had a capacity of 87,000 people. Maroon 5 has held concerts at Brazil's Allianz Parque, which has a capacity of close to 44,000. Almost 30,000 people attended Maroon 5's 2015 Madison Square Garden concert over two days.
The answer is yes.

Could a hamster experience two leap years?
Pet hamsters typically have a maximum lifespan of three years. Leap years are typically separated by four years.
The answer is no.

Is Argon near Neon on the periodic table of elements?
Argon is a noble gas. Neon is a noble gas. The noble gases are all clumped together on the periodic table of elements.
The answer is yes.

Did Donatello use a smartphone?
Donatello died on December 13, 1466. The first smartphone did not come out until 1992.
The answer is no.