A radioactive element has a half life of $200$ days. The percentage of original activity remaining after $83$ days is____(Nearest integer)
(Given : antilog $0.125 = 1.333$ , antilog $0.693 = 4.93$ )

Question

A radioactive element has a half life of 200 days. The percentage of original activity remaining after 83 days is____(Nearest integer) (Given : antilog 0.125=1.333, antilog 0.693=4.93)

MARKS Content Team · Accepted Answer

Correct answer: 75. For first order reaction, K=2.303/tlogN_oN_t ... 1 Also, K=(0.693t_12 ... 2Equating 1 and 2Hence, 2.303)/tlogN_oN_t=0.693t_122.303/83logN_oN_t=0.693/200 N_oN_t=4/3 %N_tN_0=0.75×100 =75%

A radioactive element has a half life of $200$ days. The percentage of original activity remaining after $83$ days is____(Nearest integer)
(Given : antilog $0.125 = 1.333$ , antilog $0.693 = 4.93$ )

Solution

Relevant Questions

A radioactive element has a half life of 200 days. The percentage of original activity remaining after 83 days is____(Nearest integer)(Given : antilog 0.125=1.333, antilog 0.693=4.93)

Solution

Relevant Questions

A radioactive element has a half life of $200$ days. The percentage of original activity remaining after $83$ days is____(Nearest integer)
(Given : antilog $0.125 = 1.333$ , antilog $0.693 = 4.93$ )