The elements are laid out in order of Atomic Number
1 of 7
Hydrogen
Hydrogen, 1, H, does not readily fit into any group
2 of 7
Groups
A Group is a vertical column of like elements eg Group 1 The Alkali Metals (Li, Na, K etc.), Group 7 The Halogens (F, Cl, Br, I etc.) and Group 8 or 0 The Noble Gases (He, Ne, Ar etc.).
3 of 7
Groups 2
The group number equals the number of electrons in the outer shell (eg chlorine's electron arrangement is 2.8.7, the second element down in Group 7).
4 of 7
Period
A Period is a horizontal row of elements with a variety of properties (more metallic to more non-metallic.
5 of 7
Period 2
All the elements use the same number of electron shells which equals the period number (eg sodium's electron arrangement 2.8.1, the first element in Period 3).
6 of 7
Transition Metals
On Period 4 is a horizontal row of ten elements between Group 2 and Group 3, Sc to Zn are called the first Transition Metals Series of Elements.
7 of 7
Other cards in this set
Card 2
Front
Hydrogen, 1, H, does not readily fit into any group
Back
Hydrogen
Card 3
Front
A Group is a vertical column of like elements eg Group 1 The Alkali Metals (Li, Na, K etc.), Group 7 The Halogens (F, Cl, Br, I etc.) and Group 8 or 0 The Noble Gases (He, Ne, Ar etc.).
Back
Card 4
Front
The group number equals the number of electrons in the outer shell (eg chlorine's electron arrangement is 2.8.7, the second element down in Group 7).
Back
Card 5
Front
A Period is a horizontal row of elements with a variety of properties (more metallic to more non-metallic.
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