mirandaneuberg1 mirandaneuberg1

09-11-2017
Chemistry

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Thallium has two isotopes: thallium-203 and thallium 205. Thallium's atomic number is 81 and its atomic mass is 204.38 amu. Which statement about the thallium isotopes is true?

A.There is more thallium-203 in nature.

B.Atoms of both isotopes have 81 neutrons.

C.Thallium-205 isotopes have fewer neutrons than thallium-203 isotopes.

D.All atoms of thallium have 81 protons.

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jaylaprah jaylaprah

09-11-2017

C is the correct answer i believe hope this helps!!

Plz mark as brainlist and five star it would mean alot!!!

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30-10-2018

D is the correct answer

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