isotope of tin
one of either 10 stable, naturally-occurring isotopes of tin or artificial, unstable isotopes of tin
en-GB/ˈaɪsətəʊp əv ˈtɪn/
en-US/ˈaɪsəˌtoʊp ʌv ˈtɪn/
one of either 10 stable, naturally-occurring isotopes of tin or artificial, unstable isotopes of tin