Which of the following
statements are true of Isotopes?
I. Isotopes of an element has the
same properties
II. Isotopes of elements are
normally separated using physical
methods
III. Isotopes of an element has
the same number of protons in
their nucleus
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
C. II and III only
The correct answer is B. I and III only.
I. Isotopes of an element do not have the same properties. While they have the same number of protons, they have different numbers of neutrons, which can affect their chemical and physical properties.
II. Isotopes of elements are normally separated using physical methods. This is true since isotopes have different masses, allowing them to be separated by techniques such as centrifugation or chromatography.
III. Isotopes of an element have the same number of protons in their nucleus. This is true, as isotopes of the same element have the same atomic number, which is determined by the number of protons in the nucleus.