Question

an isotope varies from other isotopes of the same element by the ________. in other words, what makes isotopes different from each other?
atomic number
number of protons
number of neutrons
number of electrons

how many neutrons are in uranium - 238 isotope? remember ape man
238
146
92
97

Explanation:

Question 5

Isotopes of an element have the same atomic number (and thus same number of protons) but differ in the number of neutrons. Atomic number is based on protons, and electrons can vary in ions but not for isotope distinction. So the difference is in neutrons.

Step1: Recall uranium's atomic number. Uranium has an atomic number of 92, meaning 92 protons.

Step2: Use the formula for neutrons: mass number - atomic number. For uranium - 238, mass number is 238, atomic number is 92. So neutrons = 238 - 92.

$238 - 92 = 146$

Answer:

C. number of neutrons

Question 6