교과서 질문
Consider an atom of 10B. (b) What is the symbol of the atom obtained by adding one proton to 10B?
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2. Atoms & Elements
Isotopes
객관식
Isotopes of a given atom
A
have a different number of protons and electrons.
B
all have the same mass and properties.
C
have the same number of protons, but a different number of neutrons.
D
are usually man-made and never occur naturally.
E
all have a natural abundance equal to 100%.
검증된 단계별 안내1
Understand the definition of isotopes: Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.
Recall that the number of protons in an atom defines the element and is the same for all isotopes of that element. This is known as the atomic number.
Recognize that isotopes have different numbers of neutrons, which results in different mass numbers for the isotopes of the same element.
Note that isotopes can occur naturally or be man-made. Many elements have naturally occurring isotopes with varying natural abundances.
Understand that the natural abundance of isotopes is not always 100%. It varies depending on the isotope and the element.
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