lewis dot structure\ndirections: fill in the lewis dot structure for each of the elements in the table…
lewis dot structure\ndirections: fill in the lewis dot structure for each of the elements in the table below.\nb na sn k i\nhe *something is different about this one...* ge kr ga s\nsr c li cl as\nwrite the rule: how do you know how many valence electrons an element has?\nidentify what is incorrect about the following and show the correct lewis structure.\nproblem what is wrong correct version\nn\nxe\np
Answer
Explanation:
Step1: Determine valence - electron rule
For main - group elements, the number of valence electrons is equal to the group number (for groups 1 - 2, it's the group number; for groups 13 - 18, it's the group number minus 10). For example, elements in group 1 have 1 valence electron, elements in group 17 have 7 valence electrons.
Step2: Analyze 'N' Lewis structure error
Nitrogen (N) is in group 15, so it has 5 valence electrons. In the given structure of N, there are 8 dots around N, which is incorrect. The correct Lewis structure has 5 dots around N.
Step3: Analyze 'Xe' Lewis structure error
Xenon (Xe) is in group 18, so it has 8 valence electrons. In the given structure, the dots are not arranged correctly. The correct Lewis structure has 8 dots arranged around Xe in pairs and singles to represent the valence - electron distribution.
Step4: Analyze 'P' Lewis structure error
Phosphorus (P) is in group 15, so it has 5 valence electrons. In the given structure of P, there are 10 dots around P, which is incorrect. The correct Lewis structure has 5 dots around P.
Answer:
| Problem | What is Wrong | Correct Version |
|---|---|---|
| :N: with 8 dots | Incorrect number of valence electrons (should be 5) | :N··· |
| :Xe: with incorrect dot - arrangement | Incorrect dot - arrangement for 8 valence electrons | :Xe: with 8 dots arranged properly (2 pairs and 4 singles) |
| :P: with 10 dots | Incorrect number of valence electrons (should be 5) | :P··· |
For the first table elements: B (group 13) has 3 valence electrons, Lewis structure: ·B·· Na (group 1) has 1 valence electron, Lewis structure: Na· Sn (group 14) has 4 valence electrons, Lewis structure: ·Sn··· K (group 1) has 1 valence electron, Lewis structure: K· I (group 17) has 7 valence electrons, Lewis structure: :I····· He (group 18) has 2 valence electrons, Lewis structure: He: Ge (group 14) has 4 valence electrons, Lewis structure: ·Ge··· Kr (group 18) has 8 valence electrons, Lewis structure: :Kr: Ga (group 13) has 3 valence electrons, Lewis structure: ·Ga·· S (group 16) has 6 valence electrons, Lewis structure: :S···· Sr (group 2) has 2 valence electrons, Lewis structure: Sr· C (group 14) has 4 valence electrons, Lewis structure: ·C··· Li (group 1) has 1 valence electron, Lewis structure: Li· Cl (group 17) has 7 valence electrons, Lewis structure: :Cl····· As (group 15) has 5 valence electrons, Lewis structure: :As····