How many alpha and beta particles are emitted when uranium nucleus U 238 92 decays to lead Pb 206 82 ?

During α decay, Mass number decrease by 4 and Atomic number decrease by 2 . During β decay, Atomic number increase by 1 . Let x is number of α decays and y is number of β decays. 206 = 238 - 4 x _ _ _ _ _ _ _ ( 1 ) 82 = 92 - 2 x + y _ _ _ _ _ _ _ _ ( 2 ) 4 x = 32 x = 8 Putting value of x in ( 2 ) 82 = 92 - 2 × 8 + y y = 82 + 16 - 92 y = 6 Number of α particle = 8 . Number of β particles = 6 .

In the nuclear reaction 6 X 12 → α decay Z Y A , the value of A & Z .

cannot be determined with the given data

In a nuclear reaction given below, a nucleus X 226 88 changes to another nucleus Y . X 226 88 → Y + α + Energy What is atomic number and mass number of Y ?

Since the given radioactive decay is that of alpha decay as there is an alpha particle emitted, therefore, the equation can be rewritten as, X 226 88 → Y 222 86 + α 2 4 + Energy ∴ Atomic number of Y is 86 Mass number of Y is 222 . Atomic number is the number of protons present in the nucleus of that atom. Mass number is the number of nucleons present in the nucleus of that atom.

MEDIUM

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Soddy and Fajan displacement law states that the nucleus that undergoes disintegration during a nuclear disintegration is called a daughter nucleus and the nucleus which remains after the disintegration is called parent nucleus.

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Important Questions on Nuclear Physics

MEDIUM

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

A nucleus

X

captures a

β

particle and then emits a neutron and

γ

ray to form

Y . X

and

Y

are:-

HARD

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

Which one of the following nuclear transformation is

(np)

type?

HARD

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

How many alpha and beta particles are emitted when uranium nucleus

{}_{92}U^{238}

decays to lead

{}_{82}{Pb}^{206}

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

In which of the following, no change in mass number of the daughter nuclei takes place?
(i)

α

decay (ii)

β

decay (iii)

γ

decay (iv) Neutron decay

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

Can a radioactive substance emit both

α

and

β

rays simultaneously?

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

In the nuclear reaction

_{6} X^{12} \overset{α}{\to} {decay}_{Z} Y^{A}

, the value of

A

Z

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

A radioactive element

{}_{Z}X^{A}

first emits two

β

particles and then an alpha particle and the resulting nucleus can be represented by

{}_{Q}Y^{P}

. What are the values of

P

and

Q

in terms of

A

and

Z

MEDIUM

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

When the nucleus that undergoes disintegration during a nuclear disintegration is called a parent nucleus and the nucleus which remains after the disintegration is called daughter nucleus. This law is known as Soddy and Fajan radioactive _____ law.

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

An electric field can deflect:

MEDIUM

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

Which of the following statements is/are correct?
i.

α

particles are photons.
ii. Penetrating power of

γ

radiation is very low.
iii. Ionization power is maximum for α rays.
iv. Penetrating power of

γ

radiation is very high.

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

The radioactive radiation that suffers maximum deflection in a magnetic field:

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

How many alpha and beta particles are emitted when Uranium nucleus

_{92} U^{238}

decays to lead

_{82} U^{206}

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

Which of the following statements is/are correct?
i.

α

particles are photons
ii. Penetrating power of

γ

radiation is very low
iii. Ionization power is maximum for

α

rays
iv. Penetrating power of

γ

radiation is very high

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

What is meant by alpha emission ?

HARD

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

Nuclear reaction(s) accompanied by an emission of neutron(s) is/are

MEDIUM

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

Give scientific explanation:

When the radiation coming out from certain radioactive substance is passed through an electric field, marks are found at three places on the photographic plate placed in its path.

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

${}_{Z}Y^{A} \to {}_{Z + 1}Y^{A} + X; then, X$ is _____. (Choose from: e / p / n)

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

In Gamma decay and Neutron decay, no change in _____ number of the daughter nuclei takes place. (proton/ mass)

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

In which of the following, no change in mass number of the daughter nuclei takes place?
(i)

α

decay (ii)

β

decay (iii)

γ

decay (iv) Neutron decay

EASY

Science>Physics>Nuclear Physics>Alpha, Beta and Gamma Rays and Their Properties

In a nuclear reaction given below, a nucleus ${}_{88}X^{226}$ changes to another nucleus $Y$ .

${}_{88}X^{226} \to Y + α + Energy$

What is atomic number and mass number of $Y$ ?

Soddy and Fajan displacement law states that the nucleus that undergoes disintegration during a nuclear disintegration is called a daughter nucleus and the nucleus which remains after the disintegration is called parent nucleus.

Important Questions on Nuclear Physics

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