Periods, Groups, Valence, and Valence Electrons

14 terms by georgiamulinder

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Periods

form rows across the table based upon the number of energy levels in the atoms

Principle Quantum number

What labels each period?

Groups

form columns down the table based upon the number of valence electrons in the atoms

Valence

The numeric tendency of a valence electron to change

18 groups

How many groups are labeled with the group numbers?

Higher the reactivity

Lower the valence....

have 2 valence electrons with a V of 2

Groups 8, 9, 10, and 12

has 1 valence electron with a valence of 1

Group 11

has 3 valence electrons with a valence of 3 EXCEPT boron which has a valence of 5

Group 13

has 4 valence electrons with a valence of 4

Group 14

has 5 valence electrons with a valence of 3

Group 15

has 6 valence electrons with a valence of 2

Group 16

has 7 valence electrons with a valence of 1

Group 17

has 8 valence electrons with a valence of 0

Group 18

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