Question

What is an isotope?

Answer 1

www.google.com/search?q=isotope

Answer 2

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.

Answer 3

@iGreen now aint this aanswer or what do u say , a hint ??

Answer 4

An answer*

Answer 5

??

Post your choices.

Answer 6

The one that @shadeyghost just replied to this very question?

Answer 7

An isotope is an of atom of original element
that has same number of protons but different number of neutrons
for example C12 and C13
http://en.m.wikipedia.org/wiki/Carbon-13
http://en.m.wikipedia.org/wiki/Carbon-12

Answer 8

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
"some elements have only one stable isotope"