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Social Sciences 12 Online
OpenStudy (kitten_is_back):

Which of the following is true statement about isotopes? A. The number of protons always equals the number of neutrons in all isotopes. B. The number of protons never equals the number of neutrons in an isotope. C. Different isotopes for the same element will always have the same numbers of neutrons. D. Different isotopes for the same element always have the same number of protons.

OpenStudy (joannablackwelder):

Do you know what the definition of an isotope is?

OpenStudy (kitten_is_back):

no

OpenStudy (joannablackwelder):

https://en.wikipedia.org/wiki/Isotope

OpenStudy (joannablackwelder):

What do you think given that info?

OpenStudy (kitten_is_back):

Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom. The term isotope is formed from the Greek roots isos (ἴσος "equal") and topos (τόπος "place"), meaning "the same place". Thus, different isotopes of a single element occupy the same position on the periodic table. The number of protons within the atom's nucleus is called atomic number and is equal to the number of electrons in the neutral (non-ionized) atom. Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons. The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number, and each isotope of a given element has a different mass number.

OpenStudy (joannablackwelder):

No, not B. Look at the first sentence of the definition.

OpenStudy (kitten_is_back):

i dont hey it?

OpenStudy (joannablackwelder):

No, it's not C either. Isotopes differ in neutron number, although all isotopes of a given element have the same number of protons in each atom.

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