Valence Electron Worksheet
Valence Electron Worksheet
Octet Rule states: Atoms will gain or lose e- to have e- config like a noble gas (have 8 valence e-)
Can one change the amount of protons in an atom? No Can one change the amount of electrons in an atom? Yes
Fill in the table below:
Element / Element Symbol / #protons / #
electrons / Electron Configuration / Highest Energy Level / # Valence electrons / How many electrons must be gained to obey the octet rule? / How many electrons must be lost to obey the octet rule? / What is the easiest way to obey the octet rule? / Resulting in more protons or electrons? / Atom’s overall charge
Lithium / Li / 3 / 3 / 1s22s1 / 2 / 1 / 7 / 1 / Lose 1 / 1 more p+ / 1+
Beryllium / Be / 4 / 4 / 1s22s2 / 2 / 2 / 6 / 2 / Lose 2 / 2 more p+ / 2+
Boron / B / 5 / 5 / 1s22s22p1 / 2 / 3 / 5 / 3 / Lose 3 / 3 more p+ / 3+
Carbon / C / 6 / 6 / 1s22s22p2 / 2 / 4 / 4 / 4 / Gain 4 / 4 more e- / 4-
Nitrogen / N / 7 / 7 / 1s22s22p3 / 2 / 5 / 3 / 5 / Gain 3 / 3 more e- / 3-
Oxygen / O / 8 / 8 / 1s22s22p4 / 2 / 6 / 2 / 6 / Gain 2 / 2 more e- / 2-
Fluorine / F / 9 / 9 / 1s22s22p5 / 2 / 7 / 1 / 7 / Gain 1 / 1 more e- / 1-
Neon / Ne / 10 / 10 / 1s22s22p6 / 2 / 8 / 0 / 0 / n/a / equal / neutral
Sodium / Na / 11 / 11 / 1s22s22p63s1 / 3 / 1 / 7 / 1 / Lose 1 / 1 more p+ / 1+
Magnesium / Mg / 12 / 12 / 1s22s22p63s2 / 3 / 2 / 6 / 2 / Lose 2 / 2 more p+ / 2+
Aluminum / Al / 13 / 13 / 1s22s22p63s23p1 / 3 / 3 / 5 / 3 / Lose 3 / 3 more p+ / 3+
Silicon / Si / 14 / 14 / 1s22s22p63s23p2 / 3 / 4 / 4 / 4 / Gain 4 / 4 more e- / 4-
Phosphorus / P / 15 / 15 / 1s22s22p63s23p3 / 3 / 5 / 3 / 5 / Gain 3 / 3 more e- / 3-
Sulfur / S / 16 / 16 / 1s22s22p63s23p4 / 3 / 6 / 2 / 6 / Gain 2 / 2 more e- / 2-
Chlorine / Cl / 17 / 17 / 1s22s22p63s23p5 / 3 / 7 / 1 / 7 / Gain 1 / 1 more e- / 1-
Argon / Ar / 18 / 18 / 1s22s22p63s23p6 / 3 / 8 / 0 / 0 / n/a / equal / neutral
Gallium / Ga / 31 / 31 / 1s22s22p63s23p6 4s23d104p1 / 4 / 3 / 5 / 3 / Lose 3 / 3 more p+ / 3+
Selenium / Se / 32 / 32 / 1s22s22p63s23p6 4s23d104p4 / 4 / 6 / 2 / 6 / Gain 2 / 2 more e- / 2-
Electron Dot Diagram/Notation : electron configuration of valence electrons represented with dots
Fill in the empty partial periodic table with the electron dot diagrams for each of elements below: