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Graduation of Elements inthe Modern Periodic Table
Groups and periods
properties
Atomic size The electronegativity
The metallic and
nonmetallic
1 -Atomic size property:
2 -The electronegativity property:It is the ability of the atom to attract the electrons ofthe chemical bond towards itself.
3 -The metallic and nonmetallic property:elements
Metals Nonmetals Semimetals Inert gases
© Boardworks Ltd 200510 of 47
Patterns: metals and non-metals
on the right (except hydrogen)
Where are these different types of elements grouped together in the periodic table?
metals
non-metals
between metals and non-metalsmetalloids
on the left and centre
Can you name a metalloid element?
Metalloids aren’t a type of rock music fan!
Metalloids have some properties similar to metals and other properties similar to non-metals.
© Boardworks Ltd 200511 of 47
Metals, non-metals and metalloids
© Boardworks Ltd 200512 of 47
Patterns: reactivity of metals
Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po
Rb Sr Y Zr NbMo Tc Ru Rh Pd Ag Cd In Sn
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga
Na Mg Al
Li Be
What happens to the reactivity of metals down a group?
Which is the most reactive metal?
decrease in reactivity
incr
ease
in
rea
ctiv
ity
What happens to the reactivity of metals along a period?
decrease in reactivity
© Boardworks Ltd 200513 of 47
Which metal is more reactive?
© Boardworks Ltd 200514 of 47
Patterns: reactivity of non-metals
increase in reactivity
Group 0 elements are the most unreactive of all elements.
For the remaining non-metals and metalloids, reactivity increases up a group and along a period from left to right.
Which is the most reactive non-metal/metalloid?
decrease in
reactivity
© Boardworks Ltd 200515 of 47
Which non-metal is more reactive?
Patterns 1. Metals and Non-metals
Atomic size and metalic property decrease
The electronegativity and non m
etallic property decreaseThe electronegativity and non
metallic property decrease
Atomic size and m
etalic property increase
The electronegativity and non metallic property increase