select the correct answer.\nwhich option describes a similarity and a difference between isotopes of an…

select the correct answer.\nwhich option describes a similarity and a difference between isotopes of an element?\na. same atomic number; different number of protons\nb. same number of protons; different atomic number\nc. same atomic number; different mass number\nd. same mass number; different atomic number\ne. same number of neutrons; same number of protons

select the correct answer.\nwhich option describes a similarity and a difference between isotopes of an element?\na. same atomic number; different number of protons\nb. same number of protons; different atomic number\nc. same atomic number; different mass number\nd. same mass number; different atomic number\ne. same number of neutrons; same number of protons

Answer

Brief Explanations:

Isotopes of an element have the same atomic number (which equals the number of protons) but different mass numbers (since mass number = protons + neutrons, and isotopes differ in neutrons). Option A is wrong as protons are same. Option B is wrong (atomic number same). Option D is wrong (mass number differs). Option E is wrong (neutrons differ). So C is correct.

Answer:

C. same atomic number; different mass number