Which pair of atoms constitutes a pair of isotopes of the same element?
A) X X
B) X X
C) X X
D) X X
E) X X

Question

Which pair of atoms constitutes a pair of isotopes of the same element?
A) X X 
B) X X 
C) X X 
D) X X 
E) X X

Quizplus · Accepted Answer

Isotopes have the same number of protons but different numbers of neutrons. In option B, the two atoms have the same number of protons (11ea7e7c_60fe_14a0_9a0a_c3eb2d00b8c1_TB1194_11 and 11ea7e7c_60fe_14a1_9a0a_dbd606b7447a_TB1194_11) but different numbers of neutrons, making them isotopes of the same element. The other options have different numbers of protons, therefore they cannot be isotopes of the same element.

Which Pair of Atoms Constitutes a Pair of Isotopes of the Same