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October 23, 2014

Homework Help: CHEM Periodic Trends

Posted by Stacey on Thursday, November 1, 2012 at 8:30pm.

Each of the statements below attempts to explain why some periodic property varies predictably among elements in the periodic table. Determine if each statement is true or false.

Within a family, elements with higher atomic numbers have higher electronegativity because the valance electrons are in lower principal energy levels.
Within a period, elements with higher atomic numbers require less energy to remove an electron from the atom, because the valance electrons are in higher principal energy levels.
Within a family, elements with lower atomic numbers have atoms of larger radius because the atoms have lower effective nuclear charge.
Within a family, elements with lower atomic numbers require more energy to remove an electron from the atom, because the atoms have higher effective nuclear charge.
Within a family, elements with higher atomic numbers have lower ionization energy because the valance electrons are in higher principal energy levels.
Within a period, elements with higher atomic numbers pull more strongly on electrons in a bond, because the atoms have lower effective nuclear charge.

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