Question

Isotopes of uranium have the same number of ________ but a different number of _________.
A) protons; electrons
B) protons; neutrons
C) electrons; protons
D) neutrons; protons

Answer 1

B. An atom is identified by their protonic number. So de different number is the neutrons number

Answer 2

Thank you!

Answer 3

An element is identified by its proton number;
Refer to a periodic table.

Isotopes are atoms of the same element with different number of neutrons.

An atom is neutral if its number of protons equals the number of electrons.