Describe and explain the periodic trends of the period 3 elements Na - Ar
Date Submitted: 06/26/2004 09:49:55
Category: / Science & Technology / Chemistry
Length: 2 pages (475 words)
Category: / Science & Technology / Chemistry
Length: 2 pages (475 words)
Properties of the elements of period 3 (Na - Ar) to illustrate the periodic trends
What is periodicity?
Periodicity is the repeating pattern in which the elements are arranged in the periodic table, these are some of the trends shown from looking at the periodicity of the elements.
Atomic radius
An atom doesn't have a fixed radius. The radius of an atom can only be found by measuring the distance between the nuclei of two touching …
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…the Periodic Table the amount of positive charge in the nucleus increases. And because electrons are negative, they are attracted to the positive nucleus increasly more across the period so this means that the the atom is more electronegative.
Electrical conductivity
'The ability of a material to support the flow of an electrical current'. Electrical conductivity is measured in ohm cm.
Values of Electrical Conductivity:
Na10000
Mg16000
Al38000
Si4000
P1E - 13
S1.ooE -19
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