If Radium (with atomic number 88 and atomic mass 226) emits an alpha particle...?

Question

...what will be the atomic number and mass of the resulting element? Thanks.

Thanks everyone!!!

Answer 1

88Ra226 ===> 86Rn222

Radon-222

Answer 2

The atomic number of an element is the number of protons in a single atom. The atomic weight is the sum of the protons and neutrons in the atom. An alpha particle is a helium atom. It has an atomic number of 2 and an atomic weight of 4. Thus, if radium emits one alpha particle (and nothing else), the atomic number would now be 86, and the atomic weight would now be 222.

It's a little more complicated than that, because energy is also released. But in terms of the numbers of particles, that's how it works out.

Answer 3

Atomic Weight Of Radium

Answer 4

An alpha particle is a helium atom.

Atomic # - 2 = 86
Atomic mass - 4 = 222

which is Radon-222.

Answer 5

I think I still remember this from Chemistry.

I think it becomes Radium 86/222 alpha e nagative.

Either that or it's Radium 87/223

Answer 6

Radium is a Radio active element. That means that it can emit radiations that are harmful. If you want to exactly know the effects of radio active exposure, you should go and check for chernobyl etc in the search engines. Radio activity can cause more dammage to the future generations also.