Balancing Nuclear Reactions — Unit test Answers

The alpha decay of a radioactive nuclide (X) emits a He-4 nucleus and produces an isotope of . What is X?

A stable atom that has a large nucleus most likely contains

Consider the nuclear equation below.Which is the missing value that will balance the equation?

Which represents the balanced nuclear equation for the beta plus decay of C-11?

A radioactive nuclide that is used for radiation therapy for cancer has 33 neutrons and a mass number of 60. Which is the correct symbol for this nuclide?

In which isotope is the strong nuclear force not strong enough to balance electrostatic forces between protons?

The atomic symbol represents potassium-40 (K-40), a radioactive isotope that has 19 protons and 21 neutrons. Which atomic symbol could represent an isotope that results from the decay of K-40?

A student writes the following statements about the relationship between mass defect and nuclear binding energy.1. When an isotope’s protons and neutrons come together to form a nuclide, a small amount of mass is converted to energy.2. An equivalent amount of energy must be added to the nuclide to split apart its protons and neutrons.3. Statement 1 describes the isotope’s nuclear binding energy, and statement 2 describes the isotope’s mass defect.Which statement is correct?