Question

What is the half-life of radon?

(a) 10 days

(b) 4.56 days

(c) 3.82 days

(d) 5.46 days

The question was asked in a national level competition.

This interesting question is from P-Block in section P-Block Elements of Chemistry – Class 12

Answer 1

The correct option is (c) 3.82 days

For explanation I would say: Half-life of a radioactive substance refers to the amount of time that it takes for half of the radioactive atoms in a sample to decay into a more stable form. Radon has a half-life of 3.82 days.