Multiple Choice
Zinc has five naturally occurring isotopes with an average mass of 65.39 amu. Three isotopes, in roughly equal amounts, account for 95% of zinc. Which isotope is most abundant?
A) (64Zn, 63.9291 amu)
B) (66Zn, 65.9260 amu)
C) (67Zn, 66.9271 amu)
D) (68Zn, 67.9249 amu)
E) (70Zn, 69.9253 amu)
Correct Answer:

Verified
Correct Answer:
Verified
Q68: Which element labeled A-E in the periodic
Q69: Based on its position in the periodic
Q70: What distinguishes one isotope from another?
Q71: Which particle-level diagram is the best representation
Q72: Sulfur combines with oxygen and hydrogen to
Q74: What is the chemical formula for hexasulfur
Q75: Oxygen is best described as a _<br>A)metalloid.<br>B)metal.<br>C)transition
Q76: Which statement is correct?<br>A)Electrons, protons, and neutrons
Q77: What is the chemical formula for hypochlorous
Q78: Identify each of the following compounds as