Home
Class 12
CHEMISTRY
One gram of Ra^(226) has an activity of ...

One gram of `Ra^(226)` has an activity of nearly `1 Ci`the half life of `Ra^(226)` is
a. 1500 years b. 300 years
c. 1582 years d. 200 years

A

a. 1500 years

B

b. 300 years

C

c. 1582 years

D

d. 200 years

Text Solution

Verified by Experts

The correct Answer is:
c. 1582 years
Activity `= (0.693)/(t_(1//2)) xx (W)/("Atomic Weigh") xx 6.023 xx 10^(23)`
`:. 3.7 xx 10^(10) = (0.693)/(t_(1//2)) xx (1)/(226) xx 6.023 xx 10^(23)`
`:. T_(1//2) = 1582` year
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR CHEMISTRY

    CENGAGE CHEMISTRY|Exercise Solved Example|18 Videos

  • NUCLEAR CHEMISTRY

    CENGAGE CHEMISTRY|Exercise Ex6.1 Objective|15 Videos

  • NCERT BASED EXERCISE

    CENGAGE CHEMISTRY|Exercise Nuclear Chemistry (NCERT Exercise)|29 Videos

  • ORGANIC COMPOUNDS WITH FUNCTIONAL GROUP

    CENGAGE CHEMISTRY|Exercise Archives Analytical And Descriptive|24 Videos

Similar Questions

Explore conceptually related problems

One gram of .^(226)Ra has an activity of nearly 1 Ci. The half life of .^(226)Ra is,

Half life of Ra^(226) is 1620 years. Find how many atoms of radium decayed in 1 second ?

The half life of radium (226) is 1620 years. The time takend to convert 10 g of radium to 1.25 g is a. 810 years b. 1620 years c. 3240 years d. 4860 years

Half life of C^19 is 5700 years. Find its decay constant

The half life of Ra is 1600 years. The fraction of a sample of Ra that would remain after 6400 years is

The ages of two persons differ by 20 years. If 5 years go, the older one be 5 times as old as the younger one, then their present ages are a. 25 years, 5 years b. 30 years 10 years c. 35 years 15 years d. 50 years, 30 years

The average ages of parents and two children are 30 years and 8 years respectively . The average age of the famliy is . A.16 years . B . 19 Years C. 18 years . D. 20 Years.

The half life period of radium is 1600 years . In how many years 1 g radium will be reduced to 0.125 g ?