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Chem 121 > ElemantalNotation > Flashcards

ElemantalNotation Flashcards

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1
Q

Atomic Number

A

Repersents the number of Protons in the nucleus and identifies each element

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2
Q

Mass number

A

Sum or protons and neutrons in nucleus

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3
Q

Isotopes

A

The same atoms with diferent numbers of neutrons and therefore diferent mass numbers

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4
Q

Groups

A

Verticle colums, there are 18

Tell # of electrons in outer shell

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5
Q

Periods

A

Horazontal rows
7 total
Give info about # of shells
period 2=2shells ect

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Chem 121 (4 decks)

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