Question

When a radioactive isotope releases an alpha particle, the atomic number of the atom is

A. Decreased by two
B. Decreased by four
C. Increased by two
D. Increased by four

I think it is A

Answer 1

@moji7029

Answer 2

I'm thinking right now

Answer 3

Okay

Answer 4

Alpha radiation consists of alpha particles. An alpha particle is identical to the nucleus of a helium atom, which comprises two protons and two neutrons.
When an alpha particle is emitted from a nucleus the nucleus loses two protons and two neutrons. This means the atomic mass number decreases by 4 and the atomic number decreases by 2.

Answer 5

I hope that helps

Answer 6

it's A