Question

define isotopes ? 3 marks question

Answer 1

Isoptopes are atoms with the same number of protons, but differing numbers of neutrons. In other words, the have different atomic weights. Isotopes are different forms of a single element.

Examples...

Carbon 12 and Carbon 14 are both isotopes of carbon, one with 6 neutrons and one with 8 neutrons (both with 6 protons).

Carbon-12 is a stable isotope, while carbon-14 is a radioactive isotope (radioisotope).

Uranium-235 and uranium-238 occur naturally in the Earth's crust. Both have long half-lives. Uranium-234 forms as a decay product.

Answer 2

Answer:

Isotopes are the atoms in which the number of neutrons differs and the number of protons is the same.