Question

Что такое период полураспада? 1)Число ядер, что распадаеться за 1 секунду 2)Время, за какое число ядер изотопа увеличиваеться в 2 р 3) Время, за которое ядро распадается на 2 ч 3) Время, за которое распадается половина имеющийся радиоактивных ядер

Answer 1

Верный последний ответ : Время, за которое распадается половина 
имеющихся радиоактивных ядер

Answer 2

What is the half-life of a radioactive isotope?

The half-life of a radioactive isotope refers to the time it takes for half of the radioactive nuclei in a sample to undergo radioactive decay. It is a characteristic property of each radioactive isotope and is independent of the initial amount of the isotope present. The half-life can vary widely depending on the specific isotope.

1) The number of nuclei that decay in 1 second

The number of nuclei that decay in 1 second depends on the specific isotope and its decay rate. The decay rate is determined by the half-life of the isotope. For example, if the half-life of an isotope is 1 hour, it means that half of the nuclei will decay in 1 hour. To calculate the number of nuclei that decay in 1 second, you would need to know the decay rate constant and the initial number of nuclei.

2) The time it takes for the number of nuclei of an isotope to double

The time it takes for the number of nuclei of an isotope to double is related to the half-life of the isotope. The doubling time can be calculated using the formula:

Doubling time = (ln(2) / decay constant)

where ln(2) is the natural logarithm of 2 and the decay constant is related to the half-life of the isotope. The specific value will depend on the isotope in question.

3) The time it takes for a nucleus to decay into two halves

The time it takes for a nucleus to decay into two halves is equal to the half-life of the isotope. This is because the half-life represents the time it takes for half of the nuclei in a sample to decay. After one half-life, half of the original nuclei will have decayed, leaving half remaining.

4) The time it takes for half of the radioactive nuclei to decay

The time it takes for half of the radioactive nuclei to decay is known as the half-life of the isotope. It is a characteristic property of each radioactive isotope and can vary widely depending on the specific isotope. The half-life is constant for a given isotope and is independent of the initial amount of the isotope present.

Please note that the specific values for the half-life, decay rate constant, and other related calculations will vary depending on the specific isotope in question.