Periodic Table Practice Worksheet With Answer Key - Regents Chemistry, Mr. Dolgos Page 5
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73) A neutral atom in the ground state has the electron configuration 2-8-18-7.
a) State the group and period this element is found on the Periodic Table.
b) Identify this element.
c) Classify this element as a metal, nonmetal, or metalloid.
d) In the box below, draw a Lewis electron-dot structure for this element.
two
e) List
other elements likely to have properties similar to this element.
Bonus (1 pt.)
smaller
1) The radius of a calcium ion is
than the radius of a calcium atom because
the calcium ion contains the same nuclear charge and
a) fewer electrons
c) more protons
b) fewer protons
d) more electrons
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