Е аз за тези частните питам и не само, значи се използват?!
погледни тук.. http://en.wikipedia.org/wiki/Isotopes_of_platinum
и тук.. http://en.wikipedia.org/wiki/Platinum
Isotopes
Platinum has six naturally occurring isotopes: 190Pt, 192Pt, 194Pt, 195Pt, 196Pt, and 198Pt. The most abundant of these is 195Pt, comprising 33.83% of all platinum. 190Pt is the least abundant at only .01%. Of the naturally occurring isotopes, only 190Pt is unstable, though it decays with a half-life of 6.5 × 1011 years. 198Pt undergoes alpha decay, but because its half-life is estimated as being greater than 3.2 × 1014 years, it is considered stable. Platinum also has 31 synthetic isotopes ranging in atomic mass from 166 to 202, making the total number of known isotopes 37. The least stable of these is 166Pt with a half-life of 300 µs, while the most stable is 193Pt with a half-life of 50 years. Most of platinum's isotopes decay by some combination of beta decay and alpha decay. 188Pt, 191Pt, and 193Pt decay primarily by electron capture. 190Pt and 198Pt have double beta decay paths.


Трима души пазят тайна когато двамата са умрели!

Редактирано от goshko147 на 25.04.10 01:29.