Question

2. If the amount of Radium left 1/4th of its
initial concentration in 3160 years then Half
life of Radium is
(A) 1580 years
(B) 1400 years
(C) 1730 years
(D) 1650 years​

Answer 1

Answer:

don't know it's hard

Explanation:

sorry sorry but ask it from topper thanks Mark me as brainliest

Answer 2

Explanation:

radium -226,9 common isotopes of radium, has a half -time of 1,620 years,

i know this much only sorry