Question

when a Alpha particle is emitted the atomic number of the daughter element is 1 unit more as compared to that of parent element .the increase in atomic number is due to​

Answer 1

Hello!

The data in your question is wrong. When an alpha particle is emitted, the atomic number of the daughter element is actually 2 units less than that of the parent element.

This is because of the fact that the alpha particle is a doubly charged helium atom, i.e., a helium nucleus having 2 protons and 2 neutrons. To keep the mass number and atomic number of both sides same, the atomic number of daughter element decreases by 2 after an alpha particle is emitted.

$^{A}_{Z}X = ^{4}_{2}He + ^{A-4}_{Z-2}Y$

Here, X is the parent and Y is the daughter.

Thanks!

Answer 2

Answer:

The data in your question is wrong. When an alpha particle is emitted, the atomic number of the daughter element is actually 2 units less than that of the parent element.

This is because of the fact that the alpha particle is a doubly charged helium atom, i.e., a helium nucleus having 2 protons and 2 neutrons. To keep the mass number and atomic number of both sides same, the atomic number of daughter element decreases by 2 after an alpha particle is emitted.

^{A}_{Z}X = ^{4}_{2}He + ^{A-4}_{Z-2}Y

Z

A

X=

2

4

He+

Z−2

A−4

Y

Here, X is the parent and Y is the daughter.