1.2 Mass number , atomic number and isotopes

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Chemistry

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9 Terms

1
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What is proton number z ?
number of protons in the nucleus
2
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What is number of electrons in the atom equal to
the proton number
3
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Number of electrons in outer shell determines ?
Chemical properties of an element and what sort of element it is
4
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Atomic number defines the
Chemical identity
5
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Atomic number (Proton number) =
Number of protons
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[A] = Number of protons + number of neutrons
[A]=
[A] = Mass number
7
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Isotopes are ...
atoms of the same element with different number of neutrons but same of protons
8
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Isotopes of the same elements react
Chemically the same due to same electron configuration
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Why might mass number vary in isotopes
Different number of neutrons in their nuclei