TA: Give the valence electron count for the following atoms: 5 Kr Si Al Cl Rules
ID: 1087192 • Letter: T
Question
TA: Give the valence electron count for the following atoms: 5 Kr Si Al Cl Rules for Building Lewis Structures 1. Draw the skeleton structure for the compound. Put the element in the middle. Count the total number of valence electrons for compound. for each positive charge on the compound and negative charge. Complete the Octet Rule for all atoms. The compounds get the electrons first. Continue until you run out. If you have extra, leftover electrons, place them on the central atom. This can only be done with electrons row electronegative 2. an electron an electron for each 3. atoms of the 4. and below If you do not have enough electrons to satisfy all atoms: . (Expanded Octet) 5. Add connecting atoms. formal charges For atoms such as deficient) is most stable. and -bonds to the central atom and a. Only do this when it will help the atoms and not give them poor b. an electron count less than 8 (electron 6. If multiple structures can be formed by the compound, it is calleda structure. The most stable structure has the lowest and if it has a charge, the most element has the negative chargeExplanation / Answer
group number in the periodic table is equall to no of valence electrons.
Element - No.of valence electrons
N - 5
F - 7
Kr - 8
Al - 3
O - 6
Si - 4
S - 6
1. draw the skeleton structure for the compound put least electronegative elements.
2.substract an electron for each positivecharge on the compound. Add an electron for each negative charge
3. More electronegative atoms of the compound get electrons first.
4. atomic number more than 11.
5. add double and triple bonds
6. isomeric structures . the most stable structure has lowest formal charge . and if it has a charge, the most electronegative element has the negative charge
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