Question

which of the following nobel gas is radioactive element. A=helium B=neon C=radon D=krypton​

Answer 1

Answer:

(c) option C Radon is the Correct answer..

Explanation:

The noble gases are a group of non-metals consisting of helium, neon, argon , krypton , xenon and radon. Radon is radioactive. The gases grow denser down the group, because the mass of the atom increases

Answer 2

(c) option C Radon is the Correct answer..

Explanation:

The noble gases are a group of non-metals consisting of helium, neon, argon , krypton , xenon and radon. Radon is radioactive. The gases grow denser down the group, because the mass of the atom increases