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Byju's Answer

Standard X

Physics

Properties of Alpha, Beta and Gamma Radiations

What happens ...

Question

What happens to the mass number of an element when it emits a $β$ -particle

Decrease by

1

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Decrease by

2

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Decrease by

3

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Remains unchanged

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Solution

The correct option is D Remains unchanged
In beta decay mass number of atom remains unchanged, but atomic number changes by $1$ .

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Similar questions

Q. STATEMENT - 1 :

_{Z} X^{A}

undergoes 2

α

decays, 2

β

decays (negative

β

) and 2 decays. As a result the daughter product is

_{Z - 2} Y^{A - 8} .

STATEMENT -2 : In

α

decay the mass number decreases by 4 unit and atomic number decreases by 2 unit. In

β

decay (negative

β

) the mass number remains unchanged and atomic number increases by 1 unit. In

γ

decay, mass number and atomic number remains unchanged.

Q. What happens to the mass number of an element when a

β

-particle, is emitted?

Q. Assertion :

_{Z} X^{4}

undergoes

2 α - d e c a y s, 2 β - d e c a y s

(negative

β

), and

2 γ - d e c a y s

. As a result, the daughter product is

_{z - 2} Y^{A - B}

Reason: In

α - d e c a y

, the mass number decreases by 4 unit and atomic number decreases by 2 unit. In

β - d e c a y

(negative

β

), the mass number remains unchanged and atomic number increases by 1 unit. In

γ - d e c a y

, mass number and atomic number remain unchanged.

Q. Assertion :

{_{z} X}^{A}

undergoes

2

α

- decays,

2

β

- decays (negative

β

) and

2

γ

-decays. As a result , the daughter product is

{_{z - 2} Y}^{A - 8}

Reason: In

α

- decay, the mass number decreases by

4

unit and atomic number decreases by

2

unit. In

β

- decay (negative

β

), the mass number remains unchanged and atomic number increaess by

1

unit. In

γ

-decay, mass number and atomic number remain unchanged

Q. If the radius of earth decreases by

10

%, the mass remaining unchanged, what will happen to the acceleration due to gravity?

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What happens to the mass number of an element when it emits a β-particle

The correct option is D Remains unchangedIn beta decay mass number of atom remains unchanged, but atomic number changes by 1.

What happens to the mass number of an element when it emits a $β$ -particle

The correct option is D Remains unchanged
In beta decay mass number of atom remains unchanged, but atomic number changes by $1$ .