Question

A hypothetical radioactive nucleus decays according to the following series If the mass number and atomic number of *A* are respectively 180 and72. Then to atomic number and mass number of *A *will respectively be

69,171

70,172

68,172

69,172

69,171

70,172

68,172

69,172

## The correct answer is: 69,172

### Related Questions to study

In the given nuclear reaction represents

In the given nuclear reaction represents

### The energy dissipated in a damped oscillation,

### The energy dissipated in a damped oscillation,

### If the time period of undamped oscillation is T and that of damped oscillatin is , then T,what is the relation between I&.

### If the time period of undamped oscillation is T and that of damped oscillatin is , then T,what is the relation between I&.

### Four lowest energy levels of -atom are shown in the figure. The number of possible emission lines would be

### Four lowest energy levels of -atom are shown in the figure. The number of possible emission lines would be

### Complete the following sentence In a damped oscillation of a pendulum ..

### Complete the following sentence In a damped oscillation of a pendulum ..

### When a sample of solid lithium is placed in a flask of hydrogen gas then following reaction happened This statement is

### When a sample of solid lithium is placed in a flask of hydrogen gas then following reaction happened This statement is

### complete the following sentence.Time period of oscillating of a simple pendulum is dependent on...

### complete the following sentence.Time period of oscillating of a simple pendulum is dependent on...

### Let the eleven letters .....,K denote an arbitrary permutation of the integers (1, 2,.....11), then

### Let the eleven letters .....,K denote an arbitrary permutation of the integers (1, 2,.....11), then

### The following diagram indicates the energy levels of a certain atom when the system moves from level to , emitting a photon of wavelength . The wavelength of photon produced during its transition from level to is

### The following diagram indicates the energy levels of a certain atom when the system moves from level to , emitting a photon of wavelength . The wavelength of photon produced during its transition from level to is

### pitch of screw gauge is 1 mm and there are 100 divisions on the circular scak. What measurin the diametcr of a wire, the linear scale reads, 1 mm and 47^{t} division on the circular scale coincide with the reference line. The lengthof the wire 155.6 cm. What will be the curved surface area (in cm^{2} of the wire in appropriate number of significant figures.

### pitch of screw gauge is 1 mm and there are 100 divisions on the circular scak. What measurin the diametcr of a wire, the linear scale reads, 1 mm and 47^{t} division on the circular scale coincide with the reference line. The lengthof the wire 155.6 cm. What will be the curved surface area (in cm^{2} of the wire in appropriate number of significant figures.

The nucleus after two successive decays will give

The nucleus after two successive decays will give

### The screw gauges shown above has a zero error of -0.02 and 100 divisions on the circular scak What is the diameter of wire?

### The screw gauges shown above has a zero error of -0.02 and 100 divisions on the circular scak What is the diameter of wire?

### The number of ways of dividing 52 cards amongst four players equally, are

### The number of ways of dividing 52 cards amongst four players equally, are

The half-life of radioactive Radon is 3.8 days. The time at the end of which (1/20)th of the Radon sample will remain undecayed is (given

The half-life of radioactive Radon is 3.8 days. The time at the end of which (1/20)th of the Radon sample will remain undecayed is (given