# chemistry

posted by .

210 210
Pb --> Bi + ?
82 83

60 0
Co --> ? + e
27 -1

I need an explanation on how to find the missing product.

• chemistry -

The subscripts must add up on both sides. The superscripts must add up on both sides. For the first one, You start with Pb-210 and end with Bi=210; therefore, the ? particle must have a mass of zero since 210 + 0 on the right = 210 on the left. For the atomic number, you have 82Pb on the left and 83Bi on the right. Therefore, the ? particle must be -1 because 83 + (-1) = 82.
Now, what particle has a mass of zero and a charge of -1? Must be an electron. You replace ? with -1eo

## Similar Questions

1. ### Math

Expressed to the correct number of significant figures, the sum of two masses is 445.2 grams. WHich two masses produce this answer?
2. ### psy 2PSY/210 Psychology and Health Problems10

I need help with an assignment for psy 210 i need to write about PSY/210 Psychology and Health Problems 1400 words any help would be greatly appreciated
3. ### Nuclear Physics

If a polonium-210 (Po-210) atom has just decayed, how close can the ejected alpha particle get to a neighboring Po-210 nucleus?
4. ### physics

If a polonium-210 (Po-210) atom has just decayed, how close can the ejected alpha particle get to a neighboring Po-210 nucleus?
5. ### Physics

If a polonium-210 (Po-210) atom has just decayed, how close can the ejected alpha particle get to a neighboring Po-210 nucleus?
6. ### Physics

If a polonium-210 (Po-210) atom has just decayed, how close can the ejected alpha particle get to a neighboring Po-210 nucleus?
7. ### Nuclear Physics

If a polonium-210 (Po-210) atom has just decayed, how close can the ejected alpha particle get to a neighboring Po-210 nucleus?
8. ### Physical Science

1. Which equation correctly shows beta decay?
9. ### Chemistry

Po-210 Ia an alpha emitter with a half-life of 138 days. how many grams of Po-210 remain after 552 days if the sample initially contained 5.80g of Po-210?
10. ### Chemistry

In 2006, Soviet dissident Alexander Litvinenko was murdered when Polonium-210 was added to his tea; he died three weeks later. Polonium-210 is an alpha emitter. What other product is formed?

More Similar Questions