Download I. Periodic Trends Metallic Property Non

I. Periodic Trends
Electron Negativity
Metallic Property
II. Periodic Table
Non-Metallic Property
Atomic Size/ Atomic Radius
Ionic Size
Cations<atom<anion
Ionization energy
Electron Affinity
III. Periodic Law
Mendeleev: “the properties of the elements are a periodic
function of their atomic masses”
1914- Henry Moseley arranged the elements according to
their increasing atomic numbers
Moseley: “the properties of the elements are a periodic
function of their atomic numbers”
IV. Ionic Bonds
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Bond between metal and non-metal
LEDS: Lewis electron dot structure
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Transfer of electrons
Very high melting and boiling points
Compounds in the solid state are nonconductors of
electricity while those in liquid or molten state are
conductors of electricity
Basis: static electrical attraction
Groups: 1A 2A 3A 4A 5A
V. Covalent Bonds
- bond existing between two nonmetals
- resulting compounds have low melting and
boiling points and are nonconductors of electricity
-sharing of electrons
- the number of atoms that combine to form a
covalent molecular compound is such that each atom
would attain an octet
-lone pair- non bonded pair of electrons
-bond length- distance between the number of two
boned atoms
-single bond>double bond>triple bond
-groups : 4A 5A 6A 7A
-polar bond: 0.5- 1.8
- non polar bond: 0-0.4
-polar compound: shared unequally
-non polar compound: shared equally
VI. Molecular Geometry