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... Across the Periodic Table the atomic number, or number of protons in an atom of an element, increases giving a stronger nuclear charge. ...
Across period three of the Periodic Table, the electronegativity increases steadily, however the group VIII element Argon does not have an electronegativity value as it has a full outer shell and will not accept additional electrons. ...
Moving across period three of the periodic table, this trend can be observed with all but two exceptions, Aluminium and Sulphur. These two elements have lower ionisation energies due to the arrangement of electrons in the 3p sub shell.
Metallic and Non-Metallic Properties
To the left of the Periodic table are the metals, which are generally hard, have a metallic lustre, high melting and boiling points, and are good conductors of electricity and heat. ... Elements begin to display non-metallic properties across the periodic table because of electrons becoming more strongly attracted to the nucleus, and less able to release electrons to form positive ions.
Approximate Word count = 688
Approximate Pages = 2.8
(250 words per page double spaced)
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